%0 Journal Article
%A V. P. Kalashnikov
%T A new approach to the calculation of the time correlation functions and the Wick's generalized theorem
%J Doklady Akademii Nauk
%D 1978
%P 1089-1092
%V 239
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1978_239_5_a19/
%G ru
%F DAN_1978_239_5_a19