O ()-ideáloch direktného súčinu pologrúp
O multiplikatívnej pologrupe zvyškových tried (mod )
Objets algébriquement clos et injectifs dans les catégories localement présentables
On 0-simple inverse semigroups.
On 0-simple semigroups.
On A Class Of Anti-Inverse Semigroups
On a class of semigroups admitting ring structure.
On a class of semigroups with symmetric presentations.
On a class of semisimple semigroups.
On a class of t-archimedean semigroups.
On a construction of semigroups
On a Construction of Some Semigroups
On a Miller and Clifford Theorem.
On a problem of n(2)-permutable semigroups.
On a problem of Pastijn and Petrich.
On a pull-back diagram for orthodox semigroups.
On a semigroup theoretic generalization of the Kaluznin Krasner Theorem and normal extensions of inverse semigroups.
On a wreath product embedding and idempotent pure congruences on inverse semigroups.
On a wreath product embedding for regular semigroups.
On algebraic closure and amalgamation of semigroups.