%0 Journal Article
%A Cannarsa, Piermarco
%T On a maximum principle for elliptic systems with constant coefficients
%J Rendiconti del Seminario Matematico della Università di Padova
%D 1981
%P 77-84
%V 64
%I Seminario Matematico of the University of Padua
%U http://www.numdam.org/item/RSMUP_1981__64__77_0/
%G en
%F RSMUP_1981__64__77_0