@article{PORMA_1967__26_1_114994,
     author = {Bumcrot, Robert J.},
     title = {Geometrical concepts in normed linear spaces},
     journal = {Portugaliae mathematica},
     pages = {1--6},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1967},
     mrnumber = {0253166},
     zbl = {0183.40402},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1967__26_1_114994/}
}