TY  - JOUR
AU  - Chrastina, Jan
TI  - Another approach to the classical calculus of variations. III
JO  - Archivum mathematicum
PY  - 1987
SP  - 131
EP  - 145
VL  - 23
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1987__23_3_a0/
LA  - en
ID  - ARM_1987__23_3_a0
ER  -