%0 Journal Article %A V. V. Volchkov %A Vit. V. Volchkov %T On a problem of Berenstein--Gay and its generalizations %J Izvestiya. Mathematics %D 2010 %P 691-721 %V 74 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2010_74_4_a2/ %G en %F IM2_2010_74_4_a2