@article{TVP_1974_19_2_a13,
     author = {L. B. Klebanov},
     title = {Unbiased estimates and sufficient statistics},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {392--397},
     year = {1974},
     volume = {19},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1974_19_2_a13/}
}