@article{MET_1980__27_186222,
     author = {A. Sahai and S.K. Ray},
     title = {An {Efficient} {Estimator} {Using} {Auxiliary} {Information.}},
     journal = {Metrika},
     pages = {271--276},
     publisher = {mathdoc},
     volume = {27},
     year = {1980},
     zbl = {0449.62007},
     url = {http://geodesic.mathdoc.fr/item/MET_1980__27_186222/}
}