%0 Journal Article
%A R.B. Kellogg
%A J. Pitkäranta
%A L. Babuska
%T Direct and Inverse Error Estimates for Finite Elements With Mesh Refinements.
%J Numerische Mathematik
%D 1979
%P 447-471
%V 33
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1979__33_132654/
%F NUMA_1979__33_132654