@article{CMH_1960__34_139180,
     author = {Wilhelm Klingenberg},
     title = {Neue {Ergebnisse} \"uber konvexe {Fl\"achen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {17--36},
     publisher = {mathdoc},
     volume = {34},
     year = {1960},
     zbl = {0101.14002},
     url = {http://geodesic.mathdoc.fr/item/CMH_1960__34_139180/}
}