TY  - JOUR
AU  - A.J. Tromba
TI  - A Sufflcient Condition for a Critical Point of a Functional to be a Minimum and Its Application to Plateau' s Problem.
JO  - Mathematische Annalen
PY  - 1983
SP  - 303
EP  - 312
VL  - 263
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1983__263_163749/
ID  - MAN_1983__263_163749
ER  -