1. J. A. Awolola, On multiset relations and factor multigroups, South East Asian J. Math. Mathemat. Sci. 15(3) (2019), 1-10.
2. J. A. Awolola, On cyclic multigroup family, Ratio Mathematica 37 (2019), 61-68.
3. J. A. Awolola and P. A. Ejegwa, On some algebraic properties of order of an element of a multigroup, Quasi. Related Syst. 25(1) (2017), 21-26.
4. J. A. Awolola and A. M. Ibrahim, Some results on multigroups, Quasi. Related Syst. 24(2) (2016), 169-177.
5. R. Biswas, Fuzzy subgroups and anti fuzzy subgroups, Fuzzy Set Syst. 35 (1990), 121-124. https://doi.org/10.1016/0165-0114(90)90025-2