Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1982_31_4_a13, author = {G. I. Ivchenko and E. E. Timonina}, title = {Optimal estimation for a finite population of unknown size}, journal = {Matemati\v{c}eskie zametki}, pages = {633--640}, publisher = {mathdoc}, volume = {31}, number = {4}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1982_31_4_a13/} }
G. I. Ivchenko; E. E. Timonina. Optimal estimation for a finite population of unknown size. Matematičeskie zametki, Tome 31 (1982) no. 4, pp. 633-640. http://geodesic.mathdoc.fr/item/MZM_1982_31_4_a13/