@article{TVP_1988_33_4_a24,
     author = {G. M. Koshkin},
     title = {Improving {Nonnegative} {Kernel} {Estimate} of {a~Density}},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {817--822},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1988_33_4_a24/}
}