@article{CMH_1941__14_138792,
     author = {H. Muggli},
     title = {Differentialgleichungen unendlich hoher {Ordnung.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {381--393},
     publisher = {mathdoc},
     volume = {14},
     year = {1941},
     zbl = {0026.40403},
     url = {http://geodesic.mathdoc.fr/item/CMH_1941__14_138792/}
}