TY  - JOUR
AU  - Dietrich Braess
TI  - On the Degree of Approximation by Spline Functions with Free Knots.
JO  - Aequationes mathematicae
PY  - 1975
SP  - 80
EP  - 81
VL  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1975__12_136482/
ID  - AM2_1975__12_136482
ER  -