@article{MAN_1968__177_161707,
     author = {F.W. Sch\"afke and A. SCHNEIDER},
     title = {S-hermitesche {Rand-Eigenwertprobleme.} {III.}},
     journal = {Mathematische Annalen},
     pages = {67--94},
     publisher = {mathdoc},
     volume = {177},
     year = {1968},
     url = {http://geodesic.mathdoc.fr/item/MAN_1968__177_161707/}
}