Representation of semigroups by products of simple graphs Vladimír Puš — 1989 Commentationes Mathematicae Universitatis Carolinae
Algebraic and combinatorial properties of products [Abstract of thesis] Vladimír Puš — 1989 Commentationes Mathematicae Universitatis Carolinae
A remark on distances in products of graphs Vladimír Puš — 1987 Commentationes Mathematicae Universitatis Carolinae
Chromatic number of products of graphs Vladimír Puš — 1988 Commentationes Mathematicae Universitatis Carolinae