Identity bases for some non-exact varieties EWH Lee Semigroup Forum 68 (3), 445–457, 2004 | 38 | 2004 |

Minimal non-finitely based monoids EWH Lee, JR Li Dissertationes Mathematicae 475, 65 pp, 2011 | 32 | 2011 |

On the structure of the lattice of combinatorial Rees–Sushkevich varieties EWH Lee, MV Volkov Semigroups and Formal Languages, 164–187, 2007 | 31 | 2007 |

Finite basis problem for semigroups of order five or less: generalization and revisitation EWH Lee Studia Logica 101 (1), 95–115, 2013 | 29 | 2013 |

Limit varieties generated by completely 0-simple semigroups EWH Lee, MV Volkov International Journal of Algebra and Computation 21 (1–2), 257–294, 2011 | 29 | 2011 |

Subvarieties of the variety generated by the five-element Brandt semigroup EWH Lee International Journal of Algebra and Computation 16 (2), 417–441, 2006 | 29 | 2006 |

Monoid varieties with extreme properties M Jackson, EWH Lee Transactions of the American Mathematical Society 370 (7), 4785–4812, 2018 | 28 | 2018 |

Varieties generated by 2-testable monoids EWH Lee Studia Scientiarum Mathematicarum Hungarica 49 (3), 366–389, 2012 | 28 | 2012 |

Minimal non-finitely based semigroups EWH Lee, JR Li, WT Zhang Semigroup Forum 85 (3), 577–580, 2012 | 25 | 2012 |

Maximal Specht varieties of monoids EWH Lee Moscow Mathematical Journal 12 (4), 787–802, 2012 | 25 | 2012 |

Combinatorial Rees–Sushkevich varieties are finitely based EWH Lee International Journal of Algebra and Computation 18 (5), 957–978, 2008 | 24 | 2008 |

Finitely based finite involution semigroups with non-finitely based reducts EWH Lee Quaestiones Mathematicae 39 (2), 217–243, 2016 | 23 | 2016 |

On the variety generated by some monoid of order five EWH Lee Acta Scientiarum Mathematicarum 74 (3–4), 507–535, 2008 | 22 | 2008 |

Finite basis problem for semigroups of order six EWH Lee, WT Zhang LMS Journal of Computation and Mathematics 18 (1), 1–129, 2015 | 21 | 2015 |

Some conditions related to the exactness of Rees–Sushkevich varieties SI Kublanovsky, EWH Lee, NR Reilly Semigroup Forum 76 (1), 87–94, 2008 | 21 | 2008 |

Finitely generated limit varieties of aperiodic monoids with central idempotents EWH Lee Journal of Algebra and its Applications 8 (6), 779–796, 2009 | 19 | 2009 |

Finite involution semigroups with infinite irredundant bases of identities EWH Lee Forum Mathematicum 28 (3), 587–607, 2016 | 18 | 2016 |

A sufficient condition for the non-finite basis property of semigroups EWH Lee Monatshefte für Mathematik 168 (3–4), 461–472, 2012 | 17 | 2012 |

Inherently non-finitely generated varieties of aperiodic monoids with central idempotents EWH Lee Journal of Mathematical Sciences 209 (4), 588–599, 2015 | 16 | 2015 |

Hereditarily finitely based monoids of extensive transformations EWH Lee Algebra Universalis 61 (1), 31–58, 2009 | 16 | 2009 |