@article{JRAM_1980__314_152208,
     author = {Vagn Lundsgaard Hansen},
     title = {Coverings defined by {Weierstra{\ss}} polynomials.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {29--39},
     publisher = {mathdoc},
     volume = {314},
     year = {1980},
     zbl = {0421.57001},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1980__314_152208/}
}