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@article{MZM_1990_48_4_a13, author = {I. G. Tsar'kov}, title = {Properties of the sets that have a~continuous selection from the operator~$P^\delta$}, journal = {Matemati\v{c}eskie zametki}, pages = {122--131}, publisher = {mathdoc}, volume = {48}, number = {4}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_4_a13/} }
I. G. Tsar'kov. Properties of the sets that have a~continuous selection from the operator~$P^\delta$. Matematičeskie zametki, Tome 48 (1990) no. 4, pp. 122-131. http://geodesic.mathdoc.fr/item/MZM_1990_48_4_a13/