@article{GDZPPN002323540,
title = {A Sufflcient Condition for a Critical Point of a Functional to be a Minimum and Its Application to Plateau' s Problem.},
journal = {Mathematische Annalen},
volume = {264},
year = {1983},
pages = {303-312},
zbl = {0518.58012},
url = {http://dml.mathdoc.fr/item/GDZPPN002323540}
}
Tromba, A.J. A Sufflcient Condition for a Critical Point of a Functional to be a Minimum and Its Application to Plateau' s Problem.. Mathematische Annalen, Tome 264 (1983) pp. 303-312. http://gdmltest.u-ga.fr/item/GDZPPN002323540/