Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1971__18_132112, author = {G.Ph. Barker}, title = {Monotone {Norms.}}, journal = {Numerische Mathematik}, pages = {321--326}, publisher = {mathdoc}, volume = {18}, year = {1971}, zbl = {0229.15013}, url = {http://geodesic.mathdoc.fr/item/NUMA_1971__18_132112/} }
G.Ph. Barker. Monotone Norms.. Numerische Mathematik, Tome 18 (1971), pp. 321-326. http://geodesic.mathdoc.fr/item/NUMA_1971__18_132112/