V.S. Subha, N. Thillaigovindan, V. Chinnadurai, and P. Dhanalakshmi. “Rough Fuzzy Bi-interiorideal(biquasi-Ideal) of Semigroup”. Malaya Journal of Matematik, vol. 8, no. 02, Apr. 2020, pp. 517-21, doi:10.26637/MJM0802/0033.