TY  - JOUR
AU  - J.C. Koop
TI  - On Upper Limits to the Difference in Bias Between Two Ratio Estimates.
JO  - Metrika
PY  - 1962
SP  - 145
EP  - 149
VL  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MET_1962__5_175147/
ID  - MET_1962__5_175147
ER  -