%0 Journal Article %A V. V. Vasin %T On the problem of computing the values of an unbounded operator in $B$-spaces %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1972 %P 22-28 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1972_5_a3/ %G ru %F IVM_1972_5_a3