%0 Journal Article %A S. I. Kubarev %A V. V. Pomortsev %T Non-simultaneous decoupling for a model electron-phonon Hamiltonian %J Doklady Akademii Nauk %D 1966 %P 815-818 %V 170 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_170_4_a18/ %G ru %F DAN_1966_170_4_a18