Wen Ting Zhang, Yan Feng Luo, “On Varieties Generated by Minimal Complex Semigroups”, Order, 25, no. 3, 2008, 243
Edmond W. H. Lee, “Finite Basis Problem for Semigroups of Order Five or Less: Generalization and Revisitation”, Stud Logica, 101, no. 1, 2013, 95
Edmond W. H. Lee, Advances in the Theory of Varieties of Semigroups, 2023, 65
L. N. Shevrin, B. M. Vernikov, M. V. Volkov, “Lattices of semigroup varieties”, Russ Math., 53, no. 3, 2009, 1
Yanfeng Luo, Wenting Zhang, “On the variety generated by all semigroups of order three”, Journal of Algebra, 334, no. 1, 2011, 1
Sergey V. Gusev, Edmond W. H. Lee, Boris M. Vernikov, “The lattice of varieties of monoids”, Jpn. J. Math., 17, no. 2, 2022, 117
João Araújo, João Pedro Araújo, Peter J. Cameron, Edmond W.H. Lee, Jorge Raminhos, “A survey on varieties generated by small semigroups and a companion website”, Journal of Algebra, 635, 2023, 698
Sergey V. Gusev, Edmond W. H. Lee, “Varieties of monoids with complex lattices of subvarieties”, Bull. London Math. Soc., 52, no. 4, 2020, 762
Edmond W. H. Lee, “A minimal pseudo-complex monoid”, Arch. Math., 120, no. 1, 2023, 15
Sergey V. Gusev, “Minimal monoids generating varieties with complex subvariety lattices”, Proceedings of the Edinburgh Mathematical Society, 2024, 1