@article{CMH_1950__24_138998,
     author = {M. Pinl},
     title = {Abwickelbare {Schiebfl\"achen} in {Rn.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {64--67},
     publisher = {mathdoc},
     volume = {24},
     year = {1950},
     zbl = {0036.11501},
     url = {http://geodesic.mathdoc.fr/item/CMH_1950__24_138998/}
}