%0 Journal Article
%A E. A. Kalita
%T Solubility of non-linear elliptic systems in spaces that are weaker than the natural energy space
%J Izvestiya. Mathematics 
%D 1997
%P 285-315
%V 61
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1997_61_2_a2/
%G en
%F IM2_1997_61_2_a2