On the structure of dual semigroups
On the structure of dual semigroups
On the structure of inverse semigroups.
On the structure of lower radical semigroups
On the structure of (m,n)-commutative semigroups.
On the structure of orthodox semigroups.
On the structure of semigroups which are unions of groups.
On the structure of some group codes.
On the topological structure of a finitely generated semigroup of matrices.
On the type sequences of some one dimensional rings.
On the uniqueness of the coefficient ring in a semigroup ring.
On the varieties of Cliffordian Semigroups.
On the varieties of completely regular semigroups.
On the weak permutation property.
On the weak regularity of semigroup rings.
On the word problem for free bands of groups and for free objects in some other varieties of completely regular semigroups.
On the word problem for free completely regular semigroups.
On three lattices that belong to every semigroup
On tolerance relations
On tolerances on periodic semigroups