%0 Journal Article
%A P. Lancaster
%T A Note on Sub-Multiplicative Norms.
%J Numerische Mathematik
%D 1972
%P 206-208
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1972__19_132145/
%F NUMA_1972__19_132145