@article{DAN_1967_175_6_a3,
     author = {A. M. Kagan and V. P. Palamodov},
     title = {Conditions of optimal unbiased estimation of parametric functions for incomplete exponential families with polynomial constraints},
     journal = {Doklady Akademii Nauk},
     pages = {1216--1218},
     year = {1967},
     volume = {175},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_175_6_a3/}
}