%0 Journal Article %A Mirosław Krzyśko %T Nonparametric estimation of a density function of several variables %J Mathematica Applicanda %D 1977 %P 69-73 %V 5 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v5i11.1265/ %R 10.14708/ma.v5i11.1265 %G pl %F 10_14708_ma_v5i11_1265