@article{GDZPPN002053020,
title = {Die eindimensionalen Freigebilde.},
journal = {Commentarii mathematici Helvetici},
volume = {12},
year = {1939},
pages = {254-262},
zbl = {0023.16001},
url = {http://dml.mathdoc.fr/item/GDZPPN002053020}
}
Finsler, Paul. Die eindimensionalen Freigebilde.. Commentarii mathematici Helvetici, Tome 12 (1939) pp. 254-262. http://gdmltest.u-ga.fr/item/GDZPPN002053020/