@article{TVP_1969_14_2_a21,
     author = {Ya. P. Lumel'skii and P. N. Sapozhnikov},
     title = {Unbiased estimators of the density functions},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {372--380},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1969_14_2_a21/}
}