TY  - JOUR
AU  - Cabada, Alberto
TI  - The method of lower and upper solutions for periodic and anti-periodic difference equations
JO  - Electronic transactions on numerical analysis
PY  - 2007
SP  - 13
EP  - 25
VL  - 27
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ETNA_2007__27__a11/
LA  - en
ID  - ETNA_2007__27__a11
ER  -