@article{DMSMF_1991_1991_1_a2,
     author = {Singerman, David},
     title = {Superficies de {Riemann} y cristalograf{\'\i}a},
     journal = {Disertaciones del Seminario de Matem\'aticas Fundamentales},
     publisher = {mathdoc},
     year = {1991},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/DMSMF_1991_1991_1_a2/}
}