Regular and simple Schur-semigroups.
Regular semigroup congruences.
Regular * semigroups.
Regular semigroups with a medial idempotent.
Regular semirings.
Regular WE-2 semigroups.
Regularity and complete distributivity.
Regularity of the wreath product of monoids.
Relations between cross-connections and biordered sets.
Relations Invariant under semigroup actions.
Relations on the lattice of congruences of a regular semigroup.
Relationship between the inverse transversals of a regular semigroup.
Relationships between conbinatorics and 0-simple semigroups.
Relative Act Ideals
Remark on one-sided -ideals of semigroups
Remark on the smallest semilattice congruence.
Remarks on 0-minimal quasi-ideals in semigroups.
Remarks on Maximal Left Ideals in Semigroups.
Representation extension properties of normal bands.
Representation modulaire des F-réguliers.