@article{MAN_1973__205_162498,
     author = {Walter Pranger},
     title = {Extreme {Points} of {Convex} {Sets.}},
     journal = {Mathematische Annalen},
     pages = {299--302},
     publisher = {mathdoc},
     volume = {205},
     year = {1973},
     zbl = {0248.46005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__205_162498/}
}