Atanassov's intuitionistic fuzzy grade of a sequence of fuzzy sets and join spaces determined by a hypergraph. - Bijan Davvaz; Elhan Hassani Sadrabadi; Violeta Leoreanu Fotea (J. Intell. Fuzzy Syst., 2012)

Atanassov's Intuitionistic Fuzzy Grade of I.P.S. Hypergroups of Order 7. - Bijan Davvaz; Elhan Hassani Sadrabadi; Irina Cristea (J. Multiple Valued Log. Soft Comput., 2013)

Atanassov's intuitionistic fuzzy grade of a class of non-complete 1-hypergroups. - Elhan Hassani Sadrabadi; Bijan Davvaz (J. Intell. Fuzzy Syst., 2014)

Special intuitionistic fuzzy subhypergroups of complete hypergroups. - Irina Cristea; Bijan Davvaz; Elhan Hassani Sadrabadi (J. Intell. Fuzzy Syst., 2015)

A fuzzy application of the group Zn to complete hypergroups. - Irina Cristea; Elhan Hassani Sadrabadi; Bijan Davvaz (Soft Comput., 2020)

A new relationship between population genetics and fuzzy sets. - Elhan Hassani Sadrabadi; Bijan Davvaz (Comput. Appl. Math., 2022)

Fuzzy subsets of different kinds of simple and non-Mendelian inheritance. - Elhan Hassani Sadrabadi; Bijan Davvaz (Comput. Appl. Math., 2025)