@article{MZ_1939__44_168810,
     author = {H., Schatz},
     title = {Die {Invarianten} von {Streifen} auf {Fl\"achen} in der {Bewegungsgeometrie}},
     journal = {Mathematische Zeitschrift},
     pages = {330--334},
     publisher = {mathdoc},
     volume = {44},
     year = {1939},
     zbl = {64.0713.04},
     url = {http://geodesic.mathdoc.fr/item/MZ_1939__44_168810/}
}