@article{CMH_1954__28_139075,
     author = {H. Bieri},
     title = {Ein {Minimum-Maximumproblem} \"uber konvexe {Rotationsk\"orper.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {149--154},
     publisher = {mathdoc},
     volume = {28},
     year = {1954},
     zbl = {0058.38502},
     url = {http://geodesic.mathdoc.fr/item/CMH_1954__28_139075/}
}