@article{GDZPPN002100339,
title = {On a free boundary problem for minimal surfaces.},
journal = {Inventiones mathematicae},
volume = {75},
year = {1984},
pages = {547-560},
zbl = {0537.35037},
url = {http://dml.mathdoc.fr/item/GDZPPN002100339}
}
Struwe, M. On a free boundary problem for minimal surfaces.. Inventiones mathematicae, Tome 75 (1984) pp. 547-560. http://gdmltest.u-ga.fr/item/GDZPPN002100339/