%0 Journal Article %A I. A. Ibragimov %A R. Z. Khas'minskii %T More on the estimation of distribution densities %J Zapiski Nauchnykh Seminarov POMI %D 1981 %P 72-88 %V 108 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1981_108_a5/ %G ru %F ZNSL_1981_108_a5