Saieed Akbari

Email: s_akbari[at]sharif[dot]edu
Tel: +98 (21) 6616 5612

Published and Accepted Papers

  1. Division Algebras with Left Algebraic Commutators, M. Aaghabali, M.H. Bien, Algebras and Representation  Theory,  to  appear.
  2. Highly Edge-Connected Factors Using Given Lists on Degrees, with M. Hasanvand, K. Ozeki, J. Graph Theory, to  appear.
  3. Graphs with total domatic number at least two, with M. Motiei, S. Mozaffari, S. Yazdanbod, Discussiones   Mathematicae   Graph   Theory,   to appear.
  4. Equimatchable Regular Graphs, with A.H. Ghodrati, M.A. Hosseinzadeh, A. Iranmaesh, J. Graph Theory (2018), V.87,  35-45.
  5. On the Structure of the Power Graph and the Enhanced Power Graph of a Group, with G. Aalipour, P. J. Cameron, R. Nikandish, F. Shaveisi, Electronic Journal of Combinatorics, the electronic  journal  of  combinatorics  24(3)  (2017),   #P3.16.
  6. Imprimitivity Index of the Adjacency Matrix of Digraphs, with A.H. Ghodrati, M.A. Hos- seinzadeh, Linear Algebra and its Appl.  (2017) V. 517, 15, 1-10.
  7. The Co-annihilating-ideal Graphs of Commutative Rings, with A. Alilou, J. Amjadi, S.M. Sheikholeslami,  Canadian  Mathematical  Bulletin,  Canad.   Math.   Bull.   60  (2017),   3-11.
  8. Co-maximal Graphs of Subgroups of Groups, with B. Miraftab, R. Nikandish, Canadian Mathematical Bulletin, Canad.  Math.  Bull.  60 (2017),  12-25.
  9. On the structure of graphs having a unique k-factor with A.H Ghodrati, M.A. Hosseinzadeh, Australasian  J.  Combin.   69(1)  (2017),  63-73.
  10. Some Results on the Intersection Graph of Submodules of a Module, with H.A. Tavallaee, S. Khalashi  Ghezelahmad,  Mathematica  Slovaca  (2017)  69  Issue  2,  297–304.
  11. Graphs with integer matching polynomial zeros, with P. Csikvri, A. Ghafari, S. Khalashi Ghezelahmad,  M.  Nahvi,  Discrete  Applied  Mathematics,  224,  2017,  1-8.
  12. Complexity of the Improper Twin Edge Coloring of Graphs, with P. Abedin, S.M. Demange, T. Ekim, Graphs and Combinatorics, 2017, Volume 33,   595-615.
  13. Zero-sum flows for triple systems, with A.C. Burgess, P. Danziger, E. Mendelsohn, Discrete Math., Volume 340, Issue 3, (2017),  416-425.
  14. Fully Indecomposable and Nearly Decomposable Graphs, Contributions in Discrete Mathe- matics (2017), 11, N. 2, 1–8. 
  15. On double-star decomposition of graphs, with Sh. Haghi, H.R. Maimani, A. Seify, Discus- siones  Mathematicae  Graph  Theory,  37  (2017)  835-840.
  16. 0-Sum and 1-Sum Flows in Regular Graphs, with M. Kano, S. Zare, Electronic Journal of Combinatorics  23(2)  (2016),   P2.37.
  17. Permanents of Matrices over Roots of Unity, with M. Ariannejad, Z. Tajfirouz, Linear and Multilinear  Algberas  64  (2016),  no.9, 1769-1755.
  18. On the Cayley graph of a commutative ring with respect to its zero-divisors, with G. Aalipour, Comm.  Algebra  44  (2016),  no.4, 1433-1459.
  19. Modules with Finitely Many Submodules, with S.K. Ghezelahmad, E. Yaraneri, Algebra Col- loquium  23  (2016),  no.3, 463-468.
  20. A Note on signed k-matching in graphs, with M. Dalirooifard, K. Ehsani, R. Sherkati, Aus- tralasian J. Combin.  64 (2016),  341-346.
  21. On 1-sum flows in undirected graphs with S. Friedland and K. Markstrom, S. Zare, Electronic J. Linear Algebra, (2016) V.31 (31)  646–665.
  22. Upper bounds on the number of perfect matchings and directed 2-factors in graphs with given number of vertices and edges, with M. Aaghabali, S. Friedland, K. Markstrm, Z. Tajfirouz, European  Journal  of  Combinatorics  45  (2015),  132–144.
  23. Decompositions of graphs into trees, forests, and regular subgraphs, with T.R. Jensen, M. Siggers,  Discrete  Math.  338  (8)  2015, 1322-1327.
  24. {0, 2}-Degree Free spanning Forests in Graphs, with K. Ozeki, A. Rezaei, R. Rotabi, S. Sabour,  Discrete     Math.   338,  (7)  2015, 1226-1231.
  25. The Chromatic Index of a Claw-Free Graph Whose Core has Maximum Degree 2, with M. Ghanbari,  K.  Ozeki,  Graphs  Combin.   31  (2015),  no.4, 805-811.
  26. The Inclusion Ideal Graph of Rings, with M. Habibi, A. Majidinya, R. Manaviyat, Comm. Algebra 43, 2015, 2457-2465.
  27. An Algebraic Criterion for the Choosability of Graphs, with D. Kiani, F. Mohammadi, S. Moradi,  F.  Rahmati,  Graphs  and  Combinatorics,  31  (2015),  Issue  3,  pp  497506.
  28. The proof of a conjecture in Jacobson graph of a commutative ring, with S. Khojasteh, A. Yousefzadehfard,  JAA  14  (2015),  no.10,  1550107, 14pp.
  29. The Intersection Graph of a Group, with F. Heydari, M. Maghasedi, JAA. (2015), no.5, 1550065, 9pp. 
  30. On The Unit Graph of A Non-Commutative Ring, with E. Estaji, M.R. Khorsandi, Algebra Colloquium,  22  (2015),  Special  Issue  no.1, 817-822.
  31. Zero-Sum Magic Labelings and Null Sets of Regular Graphs, with F. Rahmati, S. Zare, the electronic journal of combinatorics 21(2) (2014), #  P2.17.
  32. The multiplicity of Laplacian eigenvalue two in unicyclic graphs with D. Kiani, M. Mirza- khah, LAA, 445 (2014), 18–28.
  33. Laplacian spectral characterization of two families of trees, with A. Aalipour, Shajari, Linear and  Multilinear  Algebra,  62  (2014),  no.  7, 965-977.
  34. Some properties of a Cayley graph of a commutative ring, with G. Aalipour, Communications in  Algebra,  42  (2014) 1582-1593.
  35. On the Finiteness of Noetherian Rings with Finitely Many Regular Elements, with F. Hey- dari,  Communications  in  Algebra,  42  (2014),  no.  7, 2869-2870.
  36. {k, r - k} -factors of r-regular graphs, with Mikio Kano, Graphs and   Combinatorics, Graphs Combin.  30  (2014),  no.  4, 821-826.
  37. The chromatic index of a graph whose core is a cycle of order at most 13, with M. Ghanbari, M. J. Nikmehr, Graphs Combin.  30 (2014), no.  4,  801-819.
  38. Commutative Rings whose Cozero-divisor Graphs are Unicyclic or Bounded Degree, with S. Khojasteh,  Comunications  in  Algebra,  Comm.   Algebra  42  (2014),  no.   4, 1594-1605.
  39. Some bounds for the signed edge domination number of a graph, with H. Esfandiari, E. Barze- gary,  S.  Seddighin,  Australas.   J.  Combin.   58  (2014), 60-66.
  40. Some Results on the Intersection Graph of Ideals of Matrix Algebras, with R. Nikandish, Linear  and  Multilinear  Algebra  62  (2014),  no.2, 195-206.
  41. Laplacian spectral characterization of two families of trees, with A. Alipour, N. Shajari, Lin- ear  and  Multilinear  Algebra  62  (2014),  no.7, 965-977.
  42. Join of Two Graphs Admits a Nowhere-Zero 3-Flow, with M. Aliakbarpour, N. Ghanbari, H. Shahmohamad,  Czechoslovak  Mathematical  Journal,  Vol.   64  (2014),  No.   2, 433446.
  43. The Regular Graph of a Non-Commutative Ring, with F. Heydari, Bulletin Australian Math- ematical  Society  89  (2014),  no.1, 132-140.
  44. Some bounds for the signed edge domination number of a graph, with H. Esfandiari, E. Barze- gary,  S.  Seddighin,  Australasian  Journal  of  Combinatorics  58  (2014),  60-66.
  45. The Classification of the Annihilating-Ideal Graph of a Commutative Ring, with, G. Aalipour, R. Nikandish, M.J. Nikmehr, F. Shaveisi, Algebra Colloquium 21 (2014), no.2,   249-256. 
  46. On the dynamic coloring of cartesian products of graphs, with M. Ghanbari, S. Jahanbekam, Ars  Combinatoria,  114,  161-168,  (2014).
  47. On the edge cover polynomial of a graph with M.R. Oboudi, European Journal of Combina- torics,  34,  (2013) 297–321.
  48. The f-Chromatic Index of a Graph Whose f-Core has Maximum Degree 2, with M. Chavooshi, M. Ghanbari, S. Zare, Canadian Mathematical Bulletin 56(2013), 449-458.
  49. A Generalization of Zero-Sum Flows in Graphs, with M. Kano, S. Zare, Linear Algebra and its  Applications,  438(2013)  3629–3634.
  50. On the Lucky Choice Number of Graphs, with M. Ghanbari, R. Manaviyat and S. Zare, Graphs  and  Combinatorics,  (2013)   29:157-163.
  51. Commutativity Pattern of Finite Non-Abelian p-Groups Determine their Orders, with A. Abdollahi,  H.  Dorbidi,  H.  Shahverdi,  Comm.  in  Algebra,  41  (2013) 451–461.
  52. Vector Space Generated by the Multiplicative Commutators of a Division Ring, with M. Agha- bali,  M.  Ariannejad,  A.  Madadi,  JAA,  2013,  Vol.  12,  No.  08 .
  53. Nowhere-zero eigenvectors of graphs, with E. Ghorbani and A. Mahmoodi, Linear and Mul- tilinear Algebra 61(2013) no.2, 273-279.
  54. On the Idempotent Graph of a Ring, with M. Habibi, A. Majidinya, R. Manaviyat, Journal     of  Algebra  and  its  Applications  12  (2013), no.6,  135003, 14pp.
  55. The Regular Graph of a Commutative Ring, with F. Heydari, Periodica Mathematica Hun- garica  67  (2013),  no.2, 211-220.
  56. A Note on Comaximal Graph of Non-Commutative Rings, with M. Habibi, A. Majidinya, R. Manaviyat,  Algebra  and  Representation  Theory  16  (2013),  no.2,   303-307.
  57. A Note on the Roman Bondage Number of Planar Graphs, with M. Katirinejad, S. Qajar, Graphs  and  Combinatorics,  29(2013),  no.3,  327-331.
  58. Nowhere-zero 6-flows: A linear algebraic approach, with G.B. Khosrovshahi, A. Mofidi, Bul- letin of the ICA 68 (2013),    106-117.
  59. Minimal Prime Ideals and Cycles in Annihilating-Ideal Graphs, with, G. Aalipour, R. Nikan- dish, M.J. Nikmehr, F. Shaveisi, Rocky Mountain Journal of Mathematics 43 (2013), no.5, 1415-1425.
  60. Minimum flow number of complete multipartite graphs, with M. Aliakbarpour, N. Ghanbari, E. Nategh,    H. Shahmohamad, Bulletin of the ICA 66 (2012), no.17, 2579-2583. 
  61. Harmonious Coloring of Trees with Large Maximum Degree, with J. Kim, A. Kostochka, Discrete  Mathematics,  312  (2012)  1633–1637.
  62. A note on zero-sum 5-flows in regular graphs, with N. Gharghani, G.B. Khosrovshahi, S. Zare,  Electronic  Journal  of  Combinatorics,  19(2)  (2012),    #P7.
  63. On Harmonious Colouring of Trees, with A. Aflaki, S. Akbari, K.J. Edwards, D.S. Eskan- dani, M. Jamaali, H. Ravanbod, Electronic Journal of Combinatorics, 19 (2012), #P3.
  64. The Chromatic Index of a Graph Whose Core has Maximum Degree 2, with M. Kano, M. Ghanbari, M.J. Nikmehr, Electronic Journal of Combinatorics, 19 (2012), #P58.
  65. On the difference between chromatic number and dynamic chromatic number of graphs, with Ahadi, A. Dehghan, M., Ghanbari, Discrete Math., 312 (2012),    2579–2583.
  66. On the Coloring of the Annihilating-Ideal Graph of a Commutative Ring, with G. Aalipour, R. Nikandish, M.J. Nikmehr, F. Shaveisi, Discrete Math., 312, Issue 17 (2012),    2620-2626.
  67. Chromatic Number and Clique Number of Subgraphs of Regular Graph of Matrix Algebras, with  M.  Aryapoor,  Jamaali,  Linear  Algebra  and  its  Applications,  436  (2012),  2419-2424.
  68. Some Criteria for a Graph to be Class 1, with D. Cariolaro, M. Chavooshi, M. Ghanbari and S.  Zare,  Discrete  Math.,  312,  (2012), 2593-2598.
  69. Zero Sum Flows in Designs, with G.B. Khosrovshahi and A. Mofidi, Journal of Combinato-  rial  Designs,  19  (2011) 355-364.
  70. Intersection Graph of Submodules of a Module, with H.A. Tavallaee, S. Khalashi Ghezelah- mad,  Journal  of  Algebra  and  its  Applications,  Vol.   10,  No.  5(2011) 1-8.
  71. On Edge Star Sets in Trees, with E. Ghorbani and A. Mahmoody, Discrete Math., 311 (2011) 13, 1172-1178.
  72. Colorful Paths in Vertex Coloring of Graphs, with V. Liaghat, A. Nikzad, Electronic Journal of  Combinatorics  18  (2011),   #P17.
  73. A relation between the Laplacian and signless Laplacian eigenvalues of a graph, with E. Ghor- bani,  J. Koolen,  M.R. Oboudi,  Journal of Algebraic Combinatorics,  32 (2010),  No.   3,  459-464.
  74. Characterization of Graphs using Domination Polynomials, with S. Alikhani, Y.H. Peng, Eu- ropean Journal of Combinatorics, 31 (2010) 1714-1724 (rank 2, among 25 most downloaded articles, during April to June   2010).
  75. List-Coloring of Graphs with Cycles of Length Divisible by a Given Integer, with A. Doni, M. Ghanbari, S. Jahanbekam, A. Saito, Contemporary Mathematics(devoted to the IPM 20- Combinatorics 2009 Conference), American Mathematical Society, 117-125, Vol.  531,  2010.
  76. On the Dynamic Chromatic Number of Graphs, with M. Ghanbari, S. Jahanbekam, Con- temporary Mathematics(devoted to the IPM 20-Combinatorics 2009 Conference), American Mathematical  Society,  11-18,  Vol.   531, 2010.
  77. On the Rational Independence Roots, with S. Ghajar M.R. Oboudi, Contemporary Math- ematics(devoted to the IPM 20-Combinatorics 2009  Conference),  American  Mathematical  Society,  149-157,  Vol.  531, 2010.
  78. On the Zeros of Domination Polynomial of a Graph, with S. Alikhani M.R. Oboudi Y.H. Peng, Contemporary Mathematics(devoted to the IPM 20-Combinatorics 2009 Conference), American  Mathematical  Society,  109-115,  Vol.   531, 2010.
  79. On the existence of nowhere-zero vectors for linear transformations, with K. Hassani Mon- fared, M. Jamaali, E. Khanmohammadi, D. Kiani, Bull. Aust. Math. Soc. 82 (2010), no.  3,  480-487.
  80. On sum of powers of the Laplacian and signless Laplacian eigenvalues of graphs, with E. Ghorbani,  J.  Koolen,  M.R.  Oboudi,  Electronic  Journal  of  Combinatorics  17  (2010),    #R115.
  81. Zero-Sum Flows in Regular Graphs, with A. Daemi O. Hatami A. Javanmard A. Mehrabian, Graphs  and  Combinatorics,  26  (2010),  No.   5, 603-615.
  82. Commuting Graphs of Group Algebras, with D. Kiani, F. Ramezani, Comm. in Algebra 38 (2010) 3532-3538.
  83. The Total graph and regular graph of a commutative ring, with D. Kiani, F. Mohammadi and S. Moradi, Journal of Pure and Applied Algebra, (213) 2009,    2224-2228.
  84. On the List Dynamic Coloring of Graphs, with M. Ghanbari, S. Jahanbekam, Discrete Ap- plied  Math.,  (157)  2009, 3005-3007.
  85. On the size of graphs whose cycles have length divisible by l, with M. Jamaali, A. Mahmoody and  S.A.  Seyed  Fakhari,  Australasian  Journal  of  Combinatorics,  (45)  2009,   67-72.
  86. On Zero-Sum 6-flows of Graphs, with G.B. Khosrovshahi, N. Ghareghani, A. Mahmoody, Linear Algebra and its Applications, (430) 2009,  3047-3052.
  87. The clique numbers of regular graphs of matrix algebras are finite, with M. Jamaali, S.A. Seyed  Fakhari,  Linear  Algebra  and  its  Appl.,  (431)  2009, 1715-1718.
  88. List colorings of graphs having cycles of length divisible by a given number, with M. Ghanbari, S. Jahanbekam, M. Jamaali, Discrete Math., Vol. 309 (2009), p. 587-594.
  89. Some Relations between Rank, Chromatic Number and Energy of Graphs, with E. Ghorbani and S. Zare Firoozabadi, The Abdus Salam, International Center for Theoretical Physics(ICTP), preprint(IC/2006/073),  Discrete  Math.   Vol.   309  (2009),  p.   601-605. 
  90. On Signed Edge Domination Number of Graphs, with S. Bolouki, P. Hatami, M. Siami, Dis- crete  Math.  Vol.   309  (2009),  p. 587-594.
  91. Edge addition, singular values, and energy of graphs and matrices, with E. Ghorbani and M. Oboudi,  Linear  Algebra  and  its  Appl.   430  (2009), 2192-2199.
  92. Commutativity of the adjacency matrices of graphs, with A. Mohammadian, F. Moazami, Discrete  Math.  Vol.   309  (2009),  p. 595-600.
  93. A Class of Errorless Codes for Over-loaded Synchronous Wireless/Optical CDMA Systems and Evaluation of Channel Capacity Bounds with K. Alishahi, F. Marvasti, P. Pad, IEEE Transactions  on  Information  Theory  55  (2009),  no.   6, 2705–2715.
  94. On graphs whose star sets are (co-)cliques, with E. Ghorbani, A. Mahmoodi, Linear Algebra and  its  Applications,  430  (2009) 504-510.
  95. Kneser Graphs and Their Complements are Hyperenergetic, with F. Moazami, S. Zare, MATCH,  Vol.  61  (2009)  No.  2,  p. 361-368.
  96. Commuting Graphs of Matrix Algebras, with H. Bidkhori and A. Mohammadian, The Abdus Salam, International Center for Theoretical Physics(ICTP), Preprint(IC/2006), Communi- cations in Algebra 36 (2008) 4020-4031.
  97. Choice Number and Energy of Graphs, with E. Ghorbani, Linear Algebra and its Applica- tions,  429  (2008) 2687-2690.
  98. A Short Proof for a Theorem of Tutte, with A. Mahmoodi, Australasian Journal of Combi- natorics, Australas.  J. Combin.  42 (2008),  299-300.
  99. On Zero-Divisor Graphs of Finite Rings, with A. Mohammadian, J. Algebra, Vol. 13 (2007), 168-184(The first rank among 25 most downloaded   articles).
  100. Multicolored Trees in Complete Graphs, with A. Alipour, Journal of Graph Theory, 54 (2007), 221-232.
  101. Some Relations Between Rank of a Graph and its Complements, with A. Alipour, J.E. Boroojeni, E. Ghorbani, H.M. Shirazi, Linear Algebra and its Applications, Vol. 422, (2007), 341-347.
  102. Commuting Decomposition of Complete Graphs, with A. Herman, Journal of Combinatorial Designs  15  (2007) 133-142.
  103. On Unimodular Graphs, with S. J. Kirkland, Linear Algebra and its Applications Vol. 421, Issue 1 (2007), Pages 3-15
  104. On Rainbow Cycles in Edge Colored Complete Graphs, with O. Etesami, H. Mahini, M. Mah- moody,  Australasian  Journal  of  Combinatorics  Vol.37  (2007)   33-42. 
  105. Multicolored Parallelisms of Isomorphic Spanning Trees, with A. Alipour, H. L. Fu, Y. H. Lo, SIAM Journal of Discrete Mathematics, 20 (2006), No.  3, 564-567   .
  106. Non-commuting Graph of a Group, with A. Abdollahi, and, H.R. Maimani, Journal of Alge- bra,  298  (2006),  468-492(The  first  rank  among  25  most  downloaded articles)
  107. A Relation Between Choosability and Uniquely List Colorability, with V. S. Mirrokni, B. S. Sad- jad, J. Combinatorial Theory, Series B  96  (2006)  577-583(Among  25  most  downloaded  arti- cles).
  108. Zero-Divisor Graphs of Non-Commutative Rings with A. Mohammadian, Journal of Algebra, 296(Among  25  most  downloaded  articles)(2006),  462-479.
  109. Some relations among term rank, clique number and list chromatic number of a graph, with H.  R.  Fanai,  Disc.  Math.,  Vol.  306,  Issue  23  (2006), 3078-3082.
  110. r-Strong Edge Colorings of Graphs, with H. Bidkhori and N. Nosrati, Discrete Math., Vol. 306, Issue 23 (2006)   3005-3010.
  111. Transversals in Long Rectangular Arrays, with O. Etesami, H. Mahini, M. Mahmoody, A. Sharifi,  Discrete  Mathematics,  Vol.  306,  Issue  23  (2006) 3011-3013.
  112. {-1, 0, 1} -Basis for the Null Space of a Forest,, with A. Alipour, R. G. B. Khosrovshahi, E. Ghorbani,  Linear  Algebra  ad  its  Applications,  414,  Issues  2-3  (2006), 506-511.
  113. The kernels of the incidence matrices of graphs revisited, with N. Ghareghani, G. B. Khos- rovshahi,  H. R. Maimani,  Linear Algebra and its Applications,  414,  Issues 2-3 (2006),   617-625.
  114. On the Diameters of Commuting Graphs, with A. Mohammadian, H. Radjavi, P. Raja, Lin- ear Algebra and its Applications 418 (2006)  161-176.
  115. Commuting Graphs of Some Subsets in Simple Rings, With P. Raja, Linear Algebra and its Applications  416  (2006) 1038-1047.
  116. Rings virtually satisfying a polynomial identity, with A. Abdollahi, Journal of Pure and Ap- plied Algebra 198 (2005), No. 1-3, 9–19, Priprint ICTP No. IC2003087, (Among 25 most downloaded   articles).
  117. Rank, term rank and chromatic number of a graph, with H. R. Fanai, C. R. Acad. Sci. Paris, Ser.  I  340  (2005), No.  3, 181–184.
  118. Transversals and Multicolored Matchings, with A. Alipour J. Combinatorial Designs, Vol. 12, Issue 5 (2004), p. 325-332.
  119. On Commuting Graphs of Semisimple Rings, with M. Ghandehari, M. Hadian, and A. Mohammadian,  Linear  Algebra  and  its  Applications  390  (2004)  345-355. 
  120. On The Zero-Divisor Graph of a Commutative Ring,  with  A.  Mohammadian,  J.  Algebra, 274 (2004) 847-855 (Among 25 most downloaded articles January-March  2004).
  121. On Linear Transformations Preserving at least One Eigenvalue, with M. Aryapoor, Proc. Amer.  Math.  Soc.  132  (2004)  1621-1625.
  122. Maximal Subgroups of GLn(D), with R. Ebrahimian, H. Momenaee Kermani, A. Salehi Golse- fidy, J. Algebra, 259 (2003) 201-225 (Among 25 most downloaded articles January-December 2003).
  123. When a Zero-Divisor Graph is Planar or a Complete r-Partite Graph, with H. R. Maimani and S. Yassemi,  J. Algebra 270 (2003)  169-180.
  124. On the Matrices with Constant determinant and Permanent over Roots of Unity, with H. R. Fannai,  and  K.  Mahmoudian,  Linear  Algebra  and  its  Applications  375  (2003)  245-249.
  125. Two Conjectures On Uniquely Totally Colorable Graphs, Discrete Mathematics 266 (2003) 41-45.
  126. On the existence of normal maximal subgroups in division rings, with M. Mahdavi-Hezavehi, J.  Pure  Appl.  Algebra  171  (2002),  no.  2-3, 123-131.
  127. The Group of Units of an Artinian Ring, with R. Ebrahimian, H. Momenaee Kermani, A. Salehi  Golsefidy,  Algebra  Colloquium,  9:1  (2002), 81-88.
  128. On the Smallest Edge Defining Sets of Graphs, with G. B. Khosrovshahi, Ars Combinatoria, Vol.  63 (2002).
  129. Kr -Free Uniquely Vertex Colorable Graphs with Minimum Possible Edges, with V. S. Mir- rokni,  B.  S.  Sadjad,  Journal  of  Combinatorial  Theory,  Ser.  B  82  (2001), 316-318.
  130. Minimal Defining Sets for Trivial 2 (v, 3, v 2) Designs, with H. Maimani, C. Maysoori, Australasian  Journal  of  Combinatorics  23  (2001),  5-8.
  131. Left Artinian Algebraic Algebras, with M. Arian-Nejad, Algebra Colloquium, 8:4 (2001) 463- 470.
  132. Normal Subgroups of GLn(D) are not Finitely Generated, with M. Mahdavi-Hezavehi. Proc. Amer.  Math.  Soc.,  128  (2000), 1627-1632.
  133. Maximal Subgroups of GL1(D), with M. Mahdavi-Hezavehi, M. G. Mahmudi, J. Algebra    217 (1999), 422-433.
  134. Some Special Subgroups of GLn(D),  with  M.  Mahdavi-Hezavehi,  Algebra  Colloquium, 5:4 (1998) 361-370.
  135. On Additive Commutator Groups in Division Rings, with M. Arian-Nejad, M. Mehrabadi, Result.  Math.  33  (1998)  9-21.
  136. Uniquely Total Colorable Graphs, with M. Behzad, H. Haji-Abolhassan, E. S. Mahmoodian, Graphs and Combinatorics, Volume 13, Number 4 (1997),   305-314.
  137. On Maximum Anti Pasch Sets of Triples, Geometry, Combinatorial Designs and Related Structures, with G. B. Khosrovshahi, C . Meisoori, S. Shahriari, London Math. Society Lec- ture Note Series 245 (1997), 7-14.
  138. On a Question of Herstein Concerning Commutators in Division Rings, with M. Mahdavi- Hezavehi Rev. Roumaine de  Math.  Preprint  ICTP  No.  IC1995071,  Pures  Appl.  41,  3-4 (1996), 201-204.
  139. On Derived Groups of Division Rings II, with M. Mahdavi-Hezavehi, M. Mehrabadi, H. Hajie- Abolhassan, Preprint ICTP No.  IC1995072, Comm.  Algebra, 23 (1995),  2881-2887.
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