@article{02148484,
title = {``Strong'' extrema of functionals defined on Riemannian 2-manifolds.},
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {9},
year = {2004},
pages = {96-103},
zbl = {1094.49017},
language = {en},
url = {http://dml.mathdoc.fr/item/02148484}
}
Solanilla, Leonardo; López, Luis F.; Bustos, Jorge L. “Strong” extrema of functionals defined on Riemannian 2-manifolds.. Balkan Journal of Geometry and its Applications (BJGA), Tome 9 (2004) pp. 96-103. http://gdmltest.u-ga.fr/item/02148484/