%0 Journal Article %A N. V. Shcherbina %T On the continuity of one-parameter families of sets %J Doklady Akademii Nauk %D 1977 %P 327-329 %V 234 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a17/ %G ru %F DAN_1977_234_2_a17