Author: Gutev, Valentin G.

Gutev, Valentin G.: Factorizations of set-valued mappings with separable range. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 37 (1996), issue 4, pp. 809-814
Gutev, Valentin G.: Continuous selections, $G_\delta $-subsets of Banach spaces and usco mappings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 35 (1994), issue 3, pp. 533-538

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