Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1967__10_131764, author = {D. GRIES}, title = {Characterizations of {Certain} {Classes} of {Norms.}}, journal = {Numerische Mathematik}, pages = {30--41}, publisher = {mathdoc}, volume = {10}, year = {1967}, zbl = {0164.17603}, url = {http://geodesic.mathdoc.fr/item/NUMA_1967__10_131764/} }
D. GRIES. Characterizations of Certain Classes of Norms.. Numerische Mathematik, Tome 10 (1967), pp. 30-41. http://geodesic.mathdoc.fr/item/NUMA_1967__10_131764/