%0 Journal Article
%A A. G. Brusentsev
%A F. S. Rofe-Beketov
%T Selfadjointness conditions for strongly elliptic systems of arbitrary order
%J Sbornik. Mathematics
%D 1974
%P 103-126
%V 24
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1974_24_1_a5/
%G en
%F SM_1974_24_1_a5