@article{ZNSL_2009_368_a10,
     author = {I. A. Ibragimov},
     title = {On adaptive estimation of probability density functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {141--155},
     publisher = {mathdoc},
     volume = {368},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2009_368_a10/}
}