@article{GDZPPN002226693,
title = {On the Morse Index of Minmal Surfaces in IRp with Polygonal Boundaries.},
journal = {Manuscripta mathematica},
volume = {53},
year = {1985},
pages = {167-198},
zbl = {0607.53004},
url = {http://dml.mathdoc.fr/item/GDZPPN002226693}
}
Sauvigny, Friedrich. On the Morse Index of Minmal Surfaces in IRp with Polygonal Boundaries.. Manuscripta mathematica, Tome 53 (1985) pp. 167-198. http://gdmltest.u-ga.fr/item/GDZPPN002226693/