TY  - JOUR
AU  - Các, Nguyên Phuong
TI  - The Method of Upper and Lower Solutions for Some Nonlinear Boundary Value Problems in Unbounded Domains
JO  - Canadian journal of mathematics
PY  - 1985
SP  - 430
EP  - 441
VL  - 37
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-025-0/
DO  - 10.4153/CJM-1985-025-0
ID  - 10_4153_CJM_1985_025_0
ER  -