@article{TVP_1985_30_3_a10,
     author = {S. Yu. Efroimovi\v{c}},
     title = {Non-parametric estimation of the density with unknown smoothness},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {524--534},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1985_30_3_a10/}
}