%0 Journal Article
%A J.T. King
%T New Error Bounds for the Penalty Method and Extrapolation.
%J Numerische Mathematik
%D 1974
%P 153-166
%V 23
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1974__23_132295/
%F NUMA_1974__23_132295