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@article{MAN_1990__287_1_164702, author = {Peter Buser and Gilles Courtois}, title = {Finite parts of the spectrum of a {Riemann} surface.}, journal = {Mathematische Annalen}, pages = {523--530}, publisher = {mathdoc}, volume = {287}, number = {1}, year = {1990}, zbl = {0711.58033}, url = {http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164702/} }
Peter Buser; Gilles Courtois. Finite parts of the spectrum of a Riemann surface.. Mathematische Annalen, Tome 287 (1990) no. 1, pp. 523-530. http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164702/