Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1949__22_138959, author = {Hans Bieri}, title = {Ein geometrisches {Minimumproblem.}}, journal = {Commentarii mathematici Helvetici}, pages = {103--114}, publisher = {mathdoc}, volume = {22}, year = {1949}, zbl = {0031.17604}, url = {http://geodesic.mathdoc.fr/item/CMH_1949__22_138959/} }
Hans Bieri. Ein geometrisches Minimumproblem.. Commentarii mathematici Helvetici, Tome 22 (1949), pp. 103-114. http://geodesic.mathdoc.fr/item/CMH_1949__22_138959/