%0 Journal Article
%A L. A. Kamynin
%A B. N. Khimchenko
%T On a~weak (algebraic) extremum principle for a~second-order parabolic system
%J Izvestiya. Mathematics 
%D 1997
%P 933-959
%V 61
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1997_61_5_a1/
%G en
%F IM2_1997_61_5_a1