On a conjecture by B. Grünbaum. - Stanislav Jendrol'; Ernest Jucovic (Discret. Math., 1972)

Analogues of eberhard's theorem for 4-valent 3-polytopes with involutory automorphisms. - Ernest Jucovic (Discret. Math., 1973)

On quadrangular convex 3-polytopes with at most two types of edges. - Stanislav Jendrol'; Ernest Jucovic (Discret. Math., 1989)