%0 Journal Article
%A G. Strang
%T Approximation in the Finite Element Method.
%J Numerische Mathematik
%D 1972
%P 81-98
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1972__19_132133/
%F NUMA_1972__19_132133