@article{MAN_1933__107_159601,
     author = {M. Mathisson},
     title = {Eine neue {L\"osungsmethode} f\"ur {Differentialgleichungen} von normalem hyperbolischem {Typus}},
     journal = {Mathematische Annalen},
     pages = {400--419},
     publisher = {mathdoc},
     volume = {107},
     year = {1933},
     zbl = {0006.30701},
     url = {http://geodesic.mathdoc.fr/item/MAN_1933__107_159601/}
}