@article{TVP_1975_20_4_a3,
     author = {B. Ya. Levit},
     title = {On efficiency of a~class of non-parametric estimates},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {738--754},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1975_20_4_a3/}
}