Realization theorems for semigroups with divisor theory. A. Geroldinger, F. Halter-Koch (1992) Semigroup forum
Regular generalized adjoint semigroups of a ring. Du, Xiankun, Wang, Junlin (2006) Beiträge zur Algebra und Geometrie
Remarks on the structure of the multiplicative monoid of integers modulo m. J. Konieczny (1993) Semigroup forum
Semigroup ring construction of Frobenius extensions. Hideo Sato (1981) Journal für die reine und angewandte Mathematik
Seminearrings, seminearfields and their semigroup-theoretical background. J. Welnert (1982) Semigroup forum
Separative P.I. semigroups are embeddable into a semilattice of groups. Thomas E. Nordahl (1989) Semigroup forum
Sous-monoïdes d’intersection complète de N Charles Delorme (1976) Annales scientifiques de l'École Normale Supérieure
Syntactic congruences and syntactic algebras Johannes Arz (1983) RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications