1. Prolegomena of Hypergroup Theory;Corsini,1993
2. On (m,n)- rings;Crombez;Abh. Math. Semin. Univ. Hamburg,1972
3. On (m,n)-quotient rings;Crombez;Abh. Math. Semin. Univ. Hamburg,1972
4. Hyperring Theory and Applications;Davvaz,2007
5. n-ary hypergroups;Davvaz;Iran. J. Sci. Technol.,2006