TY  - JOUR
AU  - Jaromír Simsa
TI  - The best L2-approximation by finite sums of functions with separable variables.
JO  - Aequationes mathematicae
PY  - 1992
SP  - 248
EP  - 263
VL  - 43
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1992__43_1_137468/
ID  - AM2_1992__43_1_137468
ER  -