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• A Class of Regular Simple $ω^2$-Semigroups-II

  Yu Shang, Limin Wang, Yingying Feng

  2021-05-19

  33600 2532 Pages:351-362

• A Class of ∗-Simple Type $A$ $ω^2$ -Semigroups (I)

  Yu Shang, Limin Wang

  2021-05-19

  33005 2597 Pages:218-230

• $\cal P$-Congruence-Free Epigroups

  Jingguo Liu, Jinling Zhang

  2019-12-16

  36736 2870 Pages:97-109