%0 Journal Article %A A. V. Chernov %T On preservation of global solvability of controlled second kind operator equation %J Ufa mathematical journal %D 2020 %P 56-81 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2020_12_1_a4/ %G en %F UFA_2020_12_1_a4