@article{DMSMF_1999_1999_1_a3,
     author = {Grasselli, Luigi and  Mulazzani, Michele},
     title = {Generalizad {Lins-Mandel} {Spaces} and branched coverings of {S3.}},
     journal = {Disertaciones del Seminario de Matem\'aticas Fundamentales},
     pages = {1-20},
     publisher = {mathdoc},
     volume = {12},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMSMF_1999_1999_1_a3/}
}