Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MET_1972__18_175509, author = {T.J. Rao}, title = {On the {Variance} of the {Ratio} {Estimator.}}, journal = {Metrika}, pages = {209--215}, publisher = {mathdoc}, volume = {18}, year = {1972}, zbl = {0242.62017}, url = {http://geodesic.mathdoc.fr/item/MET_1972__18_175509/} }
T.J. Rao. On the Variance of the Ratio Estimator.. Metrika, Tome 18 (1972), pp. 209-215. http://geodesic.mathdoc.fr/item/MET_1972__18_175509/