In the paper we investigate Borel classes of multivalued functions of two variables. In particular we generalize a result of Marczewski and Ryll-Nardzewski concerning of real function whose ones of its sections are right-continuous and other ones are of Borel class \alpha, into the case of multivalued functions.
Mathematics Subject Classification. 54C60 54C08 28B20.
Keywords. multivalued functions, semi-continuity of multivalued
functions, Baire classes of multivalued functions.
Comments. This article is in final form.