Note on Laplacian energy of graphs H. Fath-Tabar; A. R. Ashrafi; I. Gutman — 2008 Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques
Note on Strong Product of Graphs M. Tavakoli; F. Rahbarnia; A. R. Ashrafi — 2013 Kragujevac Journal of Mathematics
Note on Estrada and L -Estrada indices of graphs G. H. Fath-Tabar; A. R. Ashrafi; I. Gutman — 2009 Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques
Extremely Irregular Graphs M. Tavakoli; F. Rahbarnia; M. Mirzavaziri; A. R. Ashrafi; I. Gutman — 2013 Kragujevac Journal of Mathematics
A New Proof of the Szeged-Wiener Theorem H. Khodashenas; M. J. Nadjafi-Arani; A. R. Ashrafi; I. Gutman — 2011 Kragujevac Journal of Mathematics