@article{CMH_1938__11_138721,
     author = {Hermann Muggli},
     title = {Differentialgleichungen unendlich hoher {Ordnung} mit konstanten {Koeffizienten.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {151--179},
     publisher = {mathdoc},
     volume = {11},
     year = {1938},
     zbl = {0019.34601},
     url = {http://geodesic.mathdoc.fr/item/CMH_1938__11_138721/}
}