%0 Journal Article
%A Banach, Zbigniew
%A Piekarski, Sławomir
%T An almost-Robertson-Walker universe model and the equivalence classes of perturbations : nonbarotropic perfect fluids
%J Annales de l'I.H.P. Physique théorique
%D 1996
%P 273-309
%V 65
%N 3
%I Gauthier-Villars
%U http://www.numdam.org/item/AIHPA_1996__65_3_273_0/
%G en
%F AIHPA_1996__65_3_273_0