@article{DAN_1986_289_5_a0,
     author = {Yu. A. Belov and V. S. Kas'yanyuk},
     title = {Optimal estimation of a linear functional from values of $n$ other},
     journal = {Doklady Akademii Nauk},
     pages = {1033--1035},
     publisher = {mathdoc},
     volume = {289},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_289_5_a0/}
}