@article{10_1090_S0894_0347_1995_1273415_6,
     author = {Judge, Christopher M.},
     title = {On the existence of {Maass} cusp forms on hyperbolic surfaces with cone points},
     journal = {Journal of the American Mathematical Society},
     pages = {715--759},
     publisher = {mathdoc},
     volume = {08},
     number = {3},
     year = {1995},
     doi = {10.1090/S0894-0347-1995-1273415-6},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1995-1273415-6/}
}