%0 Journal Article
%A Bratti, Giuliano
%T A link between global solvability and solvability over compacts for systems like : $(P(D_x, D_y) u = f, \ Qu = 0)$
%J Rendiconti del Seminario Matematico della Università di Padova
%D 1979
%P 361-364
%V 61
%I Seminario Matematico of the University of Padua
%U http://www.numdam.org/item/RSMUP_1979__61__361_0/
%G en
%F RSMUP_1979__61__361_0