TY  - JOUR
AU  - Irena Rachůnková
TI  - Upper and lower solutions satisfying the inverse inequality
JO  - Annales Polonici Mathematici
PY  - 1996
SP  - 235
EP  - 244
VL  - 65
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-65-3-235-244/
DO  - 10.4064/ap-65-3-235-244
LA  - en
ID  - 10_4064_ap_65_3_235_244
ER  -