On certain codes admitting inverse semigroups as syntactic monoids.
On certain finitely based varieties of semigroups.
On certain lattice-ordered semigroups.
On certain two generator monoids.
On characters and characteristic polynomials of transformation semigroups
On classification of semigroup rings.
On closure operators on monoids
On commutative exclusive semigroups.
On commutative Kleene monoids.
On commutative principal ideal semigroup rings.
On commutative semigroups which are unions of a finite number of principal ideals
On commutative subideal series of semigroups.
On commuting generalized inverses in semigroups.
On compact -semigroups
On compact regular semigroups of complex matrices.
On complete -ideals in semigroups
On completely 0-simple semigroups.
On completely regular semigroups.
On compressed ideals in topological semigroups
On conditionally commutative semigroups.