1. Abbasi, M.Y., Basar, A.: A note on ordered bi-$$\varGamma $$-ideals in intra-regular ordered $$\varGamma $$-semigroups. Afr. Mat. 27, 1403–1407 (2016)
2. Abbasi, M.Y., Hila, K., Khan, S.A., Aakif, F.T.: Characterizations of soft $$\varGamma $$-hyperideals in ordered $$\varGamma $$-semihypergroups. Afr. Mat. 31, 847–867 (2020)
3. Bashir, S., Amin, M., Shabir, M.: Prime fuzzy bi-ideals of $$\varGamma $$-semigroups. Ann. Fuzzy Math. Inform. 5(1), 115–128 (2013)
4. Bashir, M., Kanwal, N.: Prime bi-ideals of semigroups. Southeast Asian Bull. Math. 31, 757–764 (2007)
5. Bashir, S., Shabir, M.: Pure ideals in ternary semigroups. Quasigroup Relat. Syst. 17, 149–160 (2009)