%0 Journal Article
%A V. V. Kulyaba
%A O. M. Penkin
%T Strong Stratified Sets and the Friedrichs Inequality
%J Differencialʹnye uravneniâ
%D 2004
%P 69-76
%V 40
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2004_40_1_a8/
%G ru
%F DE_2004_40_1_a8