Name Mostafa Tavakoli Affiliation Department of Mathematics, Ferdowsi University of Mashhad, P. O. Box 1159, Mashhad 91775, Islamic Republic of Iran Degree — Website — Email — Journal Articles Conference Articles Projects Books Theses Speeches Innovations TitleJournal 1 Topological efficiency under graph operations Journal of Applied Mathematics and Computing 54 (2017) 69-80