@article{CM_1975__31_1_83_0,
     author = {Patterson, S. J.},
     title = {The laplacian operator on a {Riemann} surface},
     journal = {Compositio Mathematica},
     pages = {83--107},
     publisher = {Noordhoff International Publishing},
     volume = {31},
     number = {1},
     year = {1975},
     mrnumber = {384702},
     zbl = {0321.30020},
     language = {en},
     url = {http://www.numdam.org/item/CM_1975__31_1_83_0/}
}