Proof of a theorem of Tutte using permanents. - M. Aghabali; Saieed Akbari; Zakeieh Tajfirouz (Electron. Notes Discret. Math., 2014)

Upper bounds on the number of perfect matchings and directed 2-factors in graphs with given number of vertices and edges. - M. Aghabali; Saieed Akbari; Shmuel Friedland; Klas Markström; Zakeieh Tajfirouz (Eur. J. Comb., 2015)