TY  - JOUR
AU  - Werner C. Rheinboldt
TI  - On a General Estimation Principle and a Theory of Comparison Factors.
JO  - Mathematische Zeitschrift
PY  - 1966
SP  - 396
EP  - 414
VL  - 94
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1966__94_170636/
ID  - MZ_1966__94_170636
ER  -