@article{IM_1992__109_2_144022,
     author = {Werner M\"uller},
     title = {Spectral geometry and scattering theory for certain complete surfaces of finite volume.},
     journal = {Inventiones mathematicae},
     pages = {265--306},
     publisher = {mathdoc},
     volume = {109},
     number = {2},
     year = {1992},
     zbl = {0772.58063},
     url = {http://geodesic.mathdoc.fr/item/IM_1992__109_2_144022/}
}