@article{GDZPPN002334224,
title = {Finite parts of the spectrum of a Riemann surface.},
journal = {Mathematische Annalen},
volume = {287},
year = {1990},
pages = {523-530},
zbl = {0711.58033},
url = {http://dml.mathdoc.fr/item/GDZPPN002334224}
}
Buser, Peter; Courtois, Gilles. Finite parts of the spectrum of a Riemann surface.. Mathematische Annalen, Tome 287 (1990) pp. 523-530. http://gdmltest.u-ga.fr/item/GDZPPN002334224/