TY  - JOUR
AU  - Staněk, Svatoslav
TI  - On a criterion for the existence of at least four solutions of functional boundary value problems
JO  - Archivum mathematicum
PY  - 1997
SP  - 335
EP  - 348
VL  - 33
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1997__33_4_a7/
LA  - en
ID  - ARM_1997__33_4_a7
ER  -