@article{CMH_1947__20_138928,
     author = {W. Scherrer},
     title = {St\"utzfunktion und {Radius.} {I.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {366--381},
     publisher = {mathdoc},
     volume = {20},
     year = {1947},
     zbl = {0041.48703},
     url = {http://geodesic.mathdoc.fr/item/CMH_1947__20_138928/}
}