Application de la théorie des hypertas aux demi-groupes
Application of semigroup algebras to ideal extensions of semigroups.
Applications de la théorie des hypertas, II
Applications of epigroups to graded ring theory.
Archimedean classes in an ordered semigroup. IV
Archimedean equivalence for strictly positive lattice-ordered semigroups
Atomicity of tolerance lattices of commutative semigroups
Atomistic congruence lattices of semilattices.
Augmentations and wreath products of monoids.