TY  - JOUR
AU  - Dietrich Braess
TI  - On the Number of Best Approximations in Certain Non-Linear Families of Functions. (Short Communication).
JO  - Aequationes mathematicae
PY  - 1974
SP  - 118
EP  - 119
VL  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1974__11_136446/
ID  - AM2_1974__11_136446
ER  -