On De Blasi's differentiation theory for multifunctions Andrzej Spakowski — 1985 Časopis pro pěstování matematiky
On approximation by step multifunctions without compactness conditions Andrzej Spakowski — 1990 Časopis pro pěstování matematiky
On superpositionally measurable multifunctions Andrzej Spakowski — 1989 Acta Universitatis Carolinae. Mathematica et Physica
On Borel properties of semi-continuous multifunctions Andrzej Spakowski — 1994 Acta Universitatis Carolinae. Mathematica et Physica
On approximation of multifunctions with respect to the Vietoris topology Andrzej Spakowski — 1988 Acta Universitatis Carolinae. Mathematica et Physica