Congruences on conventional semigroups
Congruences on generalized inverse semigroups.
Congruences on semigroups which are perfect rectangular bands of inverse semigroups.
Congruences on strong semilattices of regular simple semigroups.
Conjugation in semigroups and finite dimensional algebras
Connected algebraic monoids.
Connections between left adequate semigroups and ...-semigroups.
Construction and representation of regular semigroups.
Construction of medial semigroups
Correction and supplement to "On a pull-back diagram for orthodox semigroups".
Correction to "A simple construction of semigroups all of whose subsemigroups are left ideals."
Correction to my paper: “Commutative semi-primary -semigroups”
Correction to my paper on structure and ideal theory of commutative semigroups
Correction to the paper “On compressed ideals in topological semigroups”
Corrigenda to "New semigroups of binary relations" "by Karen Chase.
Corrigendum: On linear algebraic semigroups. III.