@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/