TY  - JOUR
AU  - S.G. Prabhu-Afgaonkar
TI  - On Unordering Horvitz and Thompson's Tl -Class of Linear Estimators.
JO  - Metrika
PY  - 1975
SP  - 55
EP  - 60
VL  - 22
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MET_1975__22_175654/
ID  - MET_1975__22_175654
ER  -