%0 Journal Article %A Yu. F. Korobeinik %T On~a~dual problem. I.~General results. Applications to Fr\`echet spaces %J Sbornik. Mathematics %D 1975 %P 181-212 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1975_26_2_a2/ %G en %F SM_1975_26_2_a2