Gancarzewicz, Jacek; Mikulski, Włodzimierz; Pogoda, Zdzisław: Properties of product preserving functors.
(English).
In:
Bureš, J.
and Souček, V. (eds.): Proceedings of the Winter School "Geometry and Physics".
Circolo Matematico di Palermo, Palermo, 1994.
pp. [69]-86
