@article{CMH_1943__16_138826,
     author = {Paul Finsler},
     title = {Reelle {Freigebilde.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {73--80},
     publisher = {mathdoc},
     volume = {16},
     year = {1943},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMH_1943__16_138826/}
}