%0 Journal Article
%A Gilbert, R.P.
%A Howard, H.C.
%T On a class of elliptic partial differential equations
%J Portugaliae mathematica
%D 1967
%P 353-373
%V 26
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115039/
%G en
%F PORMA_1967__26_3_115039