Books received. - Janusz Czelakowski; Alasdair Urquhart; Ryszard Wójcicki; Jan Wolenski; Andrzej Sendlewski; Marcin Mostowski (Stud Logica, 1990)

Nelson algebras through Heyting ones: I. - Andrzej Sendlewski (Stud Logica, 1990)

Topologicality of Kleene Algebras With a Weak Pseudocomplementation Over Distributive P-Algebras. - Andrzej Sendlewski (Reports Math. Log., 1991)

Axiomatic extensions of the constructive logic with strong negation and the disjunction property. - Andrzej Sendlewski (Stud Logica, 1995)