@article{JRAM_1972__257_151267,
     author = {Karl Mathiak},
     title = {Bewertete {Vektorr\"aume.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {80--90},
     publisher = {mathdoc},
     volume = {257},
     year = {1972},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__257_151267/}
}