%0 Journal Article
%A Allegretto, W.
%T A Kneser Theorem for Higher order Elliptic Equations
%J Canadian mathematical bulletin
%D 1977
%P 1-8
%V 20
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-001-6/
%R 10.4153/CMB-1977-001-6
%F 10_4153_CMB_1977_001_6