@article{JRAM_1973__261_151333,
     author = {Mahmoud Haifawi},
     title = {Normed spaces over valued fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {153--156},
     year = {1973},
     volume = {261},
     zbl = {0263.46021},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__261_151333/}
}