Voir la notice de l'article provenant de la source European Digital Mathematics Library
@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/} }
W. Scherrer. Stützfunktion und Radius. I.. Commentarii mathematici Helvetici, Tome 20 (1947), pp. 366-381. http://geodesic.mathdoc.fr/item/CMH_1947__20_138928/