%0 Journal Article %A S. N. Slugin %A V. M. Shashkov %T Solvability of an extremal problem in a~case of infinite systems of weak* closed operations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1973 %P 79-83 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1973_8_a9/ %G ru %F IVM_1973_8_a9