@article{GDZPPN002110156,
title = {Isospectral plane domains and surfaces via Riemannian orbifolds.},
journal = {Inventiones mathematicae},
volume = {110},
year = {1992},
pages = {1-22},
zbl = {0778.58068},
url = {http://dml.mathdoc.fr/item/GDZPPN002110156}
}
Gordon, C.; Webb, D.; Wolpert, S. Isospectral plane domains and surfaces via Riemannian orbifolds.. Inventiones mathematicae, Tome 110 (1992) pp. 1-22. http://gdmltest.u-ga.fr/item/GDZPPN002110156/