V. Novak, T. Novotny

Embeddings of chains into chains

T. Poomsa-ard, C. Samartkoon, J. Wetweerapong

Hyperidentities in transitive graph algebras

H.J. Vogel

Categories of functors between categories with partial morphisms

K. Denecke, P. Jampachon

T-Varieties and Clones of T-terms

M. Osys

Semigroups defined by automaton extension mapping

A. Woryna

Representations of a free group of rank two by time-varying Mealy automata