%0 Journal Article %A R. V. Jolos %A V. G. Kartavenko %A V. Rybarska %T Bogolyubov's method in the problem of pairing vibrations and the problem of eliminating unphysical states %J Teoretičeskaâ i matematičeskaâ fizika %D 1974 %P 353-363 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1974_20_3_a7/ %G ru %F TMF_1974_20_3_a7