TY  - JOUR
AU  - Gregory M. Nielson
TI  - Bivariate Spline Functions and the Approximation of Linear Functionals.
JO  - Numerische Mathematik
PY  - 1973
SP  - 138
EP  - 160
VL  - 21
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NUMA_1973__21_132220/
ID  - NUMA_1973__21_132220
ER  -