@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/}
}