@article{JRAM_1996__475_153826,
     author = {Ulrich Pinkall and Alexander Bobenko},
     title = {Discrete isothermic surfaces.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {187--208},
     publisher = {mathdoc},
     volume = {475},
     year = {1996},
     zbl = {0845.53005},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1996__475_153826/}
}