@article{MAN_1922__87_158972, author = {F. J\"uttner}, title = {Beitr\"age zur {Theorie} der {Materie}}, journal = {Mathematische Annalen}, pages = {270--306}, publisher = {mathdoc}, volume = {87}, year = {1922}, url = {http://geodesic.mathdoc.fr/item/MAN_1922__87_158972/} }