%0 Journal Article
%A Gregory M. Nielson
%T Bivariate Spline Functions and the Approximation of Linear Functionals.
%J Numerische Mathematik
%D 1973
%P 138-160
%V 21
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1973__21_132220/
%F NUMA_1973__21_132220