@article{MAN_1965__162_161329,
     author = {G. Ewald},
     title = {Von {Klassen} konvexer {K\"orper} erzeugte {Hilbertr\"aume.}},
     journal = {Mathematische Annalen},
     pages = {140--146},
     publisher = {mathdoc},
     volume = {162},
     year = {1965},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1965__162_161329/}
}