@article{GDZPPN002068990,
title = {Nodal lines of eigenfunctions of the fixed membrane problem in general convex domains.},
journal = {Commentarii mathematici Helvetici},
volume = {69},
year = {1994},
pages = {142-154},
zbl = {0838.35006},
url = {http://dml.mathdoc.fr/item/GDZPPN002068990}
}
Alessandrini, Giovanni. Nodal lines of eigenfunctions of the fixed membrane problem in general convex domains.. Commentarii mathematici Helvetici, Tome 69 (1994) pp. 142-154. http://gdmltest.u-ga.fr/item/GDZPPN002068990/