TY  - JOUR
AU  - Namasivayam, S.
AU  - Ortiz, Eduardo L.
TI  - Best approximation and the numerical solution of partial differential equations with the tau method
JO  - Portugaliae mathematica
PY  - 1981
SP  - 97
EP  - 119
VL  - 40
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1981__40_1_115442/
LA  - en
ID  - PORMA_1981__40_1_115442
ER  -