- Edmond W. H. Lee, Advances in the Theory of Varieties of Semigroups, 2023, 1
![https://doi.org/10.1007/978-3-031-16497-2_1 crossref](/refsvg/svg/crossref.svg)
- Mark V. Sapir, Combinatorial Algebra: Syntax and Semantics, 2014, 85
![https://doi.org/10.1007/978-3-319-08031-4_3 crossref](/refsvg/svg/crossref.svg)
- Meng Gao, Wen Ting Zhang, Yan Feng Luo, “A non-finitely based involution semigroup of order five”, Algebra Univers., 81, no. 3, 2020, 31
![https://doi.org/10.1007/s00012-020-00662-w crossref](/refsvg/svg/crossref.svg)
- Edmond W. H. Lee, “Intervals of varieties of involution semigroups with contrasting reduct intervals”, Boll Unione Mat Ital, 15, no. 4, 2022, 527
![https://doi.org/10.1007/s40574-022-00317-9 crossref](/refsvg/svg/crossref.svg)
- Jian Rong Li, Wen Ting Zhang, Yan Feng Luo, “On the finite basis problem for the variety generated by all n-element semigroups”, Algebra Univers., 73, no. 3-4, 2015, 225
![https://doi.org/10.1007/s00012-015-0326-3 crossref](/refsvg/svg/crossref.svg)
- Edmond W.H. Lee, “Finitely based finite involution semigroups with non-finitely based reducts”, Quaestiones Mathematicae, 39, no. 2, 2016, 217
![https://doi.org/10.2989/16073606.2015.1068239 crossref](/refsvg/svg/crossref.svg)
- Edmond W. H. Lee, “Variety Membership Problem for Two Classes of Non-Finitely Based Semigroups”, Wuhan Univ. J. Nat. Sci., 23, no. 4, 2018, 323
![https://doi.org/10.1007/s11859-018-1329-7 crossref](/refsvg/svg/crossref.svg)
- Edmond W. H. Lee, Wen Ting Zhang, “Finite basis problem for semigroups of order six”, LMS J. Comput. Math., 18, no. 1, 2015, 1
![https://doi.org/10.1112/S1461157014000412 crossref](/refsvg/svg/crossref.svg)
- Edmond W. H. Lee, “Equational theories of unstable involution semigroups”, ERA-MS, 24, 2017, 10
![https://doi.org/10.3934/era.2017.24.002 crossref](/refsvg/svg/crossref.svg)
- Edmond W. H. Lee, Jian Rong Li, Wen Ting Zhang, “Minimal non-finitely based semigroups”, Semigroup Forum, 85, no. 3, 2012, 577
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