TY  - JOUR
AU  - Klimczak, Liliana
TI  - Two constant sign solutions for a nonhomogeneous Neumann boundary value problem
JO  - Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
PY  - 2015
IS  - 14
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AUPCM_2015_14_a10/
LA  - en
ID  - AUPCM_2015_14_a10
ER  -