TY  - JOUR
AU  - Allegretto, W.
TI  - A Kneser Theorem for Higher order Elliptic Equations
JO  - Canadian mathematical bulletin
PY  - 1977
SP  - 1
EP  - 8
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-001-6/
DO  - 10.4153/CMB-1977-001-6
ID  - 10_4153_CMB_1977_001_6
ER  -