@article{AM2_1969__2_182331,
     author = {K. SZIL\'ARD},
     title = {\"Uber die {Koebesche} {Konstante} ...},
     journal = {Aequationes mathematicae},
     pages = {227--232},
     year = {1969},
     volume = {2},
     url = {http://geodesic.mathdoc.fr/item/AM2_1969__2_182331/}
}