Generalization of Scott's formula for retractions from generalized Alexandroff's cube. - Jaroslaw Achinger (Stud Logica, 1986)

On a problem of P(α, δ, π) concerning generalized Alexandroff s cube. - Jaroslaw Achinger (Stud Logica, 1986)

On decidable consequence operators. - Jaroslaw Achinger; Andrzej W. Jankowski (Stud Logica, 1986)