@article{MET_1989__36_3-4_176228,
     author = {A. Chaudhuri and A.K. Adhikary},
     title = {On {Two} {Properties} of an {Unequal} {Probability} {Sampling} {Scheme.}},
     journal = {Metrika},
     pages = {161--166},
     publisher = {mathdoc},
     volume = {36},
     number = {3-4},
     year = {1989},
     zbl = {0708.62011},
     url = {http://geodesic.mathdoc.fr/item/MET_1989__36_3-4_176228/}
}