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@article{MZM_1980_28_4_a15, author = {G. I. Ivchenko and E. E. Timonina}, title = {Estimation in sampling from a finite population}, journal = {Matemati\v{c}eskie zametki}, pages = {623--633}, publisher = {mathdoc}, volume = {28}, number = {4}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1980_28_4_a15/} }
G. I. Ivchenko; E. E. Timonina. Estimation in sampling from a finite population. Matematičeskie zametki, Tome 28 (1980) no. 4, pp. 623-633. http://geodesic.mathdoc.fr/item/MZM_1980_28_4_a15/