@article{CMH_1931__3_138556,
     author = {Arthur Linder},
     title = {Ludwig {Schlaefli} \"uber den physikalischen {Raum.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {148--150},
     publisher = {mathdoc},
     volume = {3},
     year = {1931},
     zbl = {0002.08902},
     url = {http://geodesic.mathdoc.fr/item/CMH_1931__3_138556/}
}