@article{JDM_1903__12_144903,
     author = {G. Scheffers},
     title = {\"Uber {Integrationstheorien} von {Sophus} {Lie.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {525--539},
     publisher = {mathdoc},
     volume = {12},
     year = {1903},
     zbl = {34.0349.01},
     url = {http://geodesic.mathdoc.fr/item/JDM_1903__12_144903/}
}