@article{MAN_1943__119_160119,
     author = {E. H\"older},
     title = {Einrodnung besonderer {Eigenwertprobleme} in die {Eigenwertheorie} kanonischer {Differentialsgleichungssysteme.}},
     journal = {Mathematische Annalen},
     pages = {21--66},
     publisher = {mathdoc},
     volume = {119},
     year = {1943},
     zbl = {0028.22802},
     url = {http://geodesic.mathdoc.fr/item/MAN_1943__119_160119/}
}