F-Polygroups (II). - Mohammad Mehdi Zahedi; Abbas Hasankhani (Inf. Sci., 1996)

Results on i.p.s. Hypergroups. - Rajab Ali Borzooei; Abbas Hasankhani; H. Rezaei (J. Multiple Valued Log. Soft Comput., 2003)

Some Clopen sets in the Uniform Topology on BCI-algebras. - Abbas Hasankhani; H. Saadat; Mohammad Mehdi Zahedi (WEC (5), 2005)

On the category of hyper MV-algebras. - Shokoofeh Ghorbani; Esfandiar Eslami; Abbas Hasankhani (Math. Log. Q., 2009)

Implicative Topology on Residuated Lattices. - Shokoofeh Ghorbani; Abbas Hasankhani (J. Multiple Valued Log. Soft Comput., 2011)