TY  - JOUR
AU  - F.N. FRITSCH
TI  - On the Number of Nodes in Self-Contained Integration Formulas of Degree Two for Compact Planar Regions.
JO  - Numerische Mathematik
PY  - 1970
SP  - 224
EP  - 230
VL  - 16
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NUMA_1970__16_132029/
ID  - NUMA_1970__16_132029
ER  -