TY - JOUR AU - A. Chaudhuri AU - A.K. Adhikary TI - On Two Properties of an Unequal Probability Sampling Scheme. JO - Metrika PY - 1989 SP - 161 EP - 166 VL - 36 IS - 3-4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MET_1989__36_3-4_176228/ ID - MET_1989__36_3-4_176228 ER -