@article{MAN_1979__244_163305,
     author = {Norbert Steinmetz},
     title = {Zur {Theorie} der binomischen {Differentialgleichungen.}},
     journal = {Mathematische Annalen},
     pages = {263--274},
     publisher = {mathdoc},
     volume = {244},
     year = {1979},
     zbl = {0422.34005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1979__244_163305/}
}