@article{MAN_1965__162_161319,
     author = {F.W. Sch\"afke and A. SCHNEIDER},
     title = {S-hermitesche {Rand-Eigenwertprobleme.} {I.}},
     journal = {Mathematische Annalen},
     pages = {9--26},
     publisher = {mathdoc},
     volume = {162},
     year = {1965},
     url = {http://geodesic.mathdoc.fr/item/MAN_1965__162_161319/}
}