Sur les monoïdes finis dont les groupes sont commutatifs
Sur les o-bandes.
Sur les sous-monoïdes très purs
Sur une généralisation des demi-groupes nilpotents
Symmetric Semigroups of Integers Generated by 4 Elements.
Symmetrisations of semigroups.
Symons’ -congruence on sandwich semigroups
TC semigroups and inflations.
Tensor product of commutative semigroups.
Tensor product of commutative unions of groups.
The admissable trace problem for E-unitary inverse semigroups.
The archimedean graph of a positive function on a semigroup.
The Automorphism Group of a Class of Semi-Groups.
The automorphism group of some semigroups
The bicommutator of the injective hull of a nonsingular semigroup.
The ...-category of a monoid.
The center of translational hull and the hull of center of semigroup
The characterisation of monoids by properties of their S-systems.
The cofinality of a band.
The concept of structural regularity.