@article{MAN_1973__204_162477,
     author = {Horst Herold},
     title = {k-Diskonjugiertheit von w(n) + p (z) w = 0 .},
     journal = {Mathematische Annalen},
     pages = {331--336},
     publisher = {mathdoc},
     volume = {204},
     year = {1973},
     zbl = {0259.34036},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__204_162477/}
}