On the set of ranges of a transformation semigroup.
Green's relations on Croisot-Teissier semigroups.
Injective endomorphisms of Gx-normal semigroups: Infinite defects.
Transformation semigroup diagram and the ...-relation.
On maximal subsemigroups of Baer-Levi semigroups.
On automorphisms of transformation semigroups.
On congruences of ...x-normal semigroups.
Normal semigroups of partial one-to-one transformations II.
Range sets and partition sets in connection with congruences and algebraic invariants.
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