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@article{CMH_1979__54_139795, author = {Peter Buser}, title = {Dichtepunkte im {Spektrum} {Riemannscher} {Fl\"achen.}}, journal = {Commentarii mathematici Helvetici}, pages = {431--439}, publisher = {mathdoc}, volume = {54}, year = {1979}, zbl = {0423.58018}, url = {http://geodesic.mathdoc.fr/item/CMH_1979__54_139795/} }
Peter Buser. Dichtepunkte im Spektrum Riemannscher Flächen.. Commentarii mathematici Helvetici, Tome 54 (1979), pp. 431-439. http://geodesic.mathdoc.fr/item/CMH_1979__54_139795/