%0 Journal Article
%A V. N. Popov
%A P. A. Sevastianov
%T Effective action and collective bose-excitations in the $t$-$J$-model
%J Zapiski Nauchnykh Seminarov POMI
%D 1995
%P 300-309
%V 224
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1995_224_a22/
%G ru
%F ZNSL_1995_224_a22