@article{10_14708_ma_v5i11_1265,
     author = {Miros{\l}aw Krzy\'sko},
     title = {Nonparametric estimation of a density function of several variables},
     journal = {Mathematica Applicanda},
     pages = { 69--73},
     publisher = {mathdoc},
     volume = {5},
     number = {11},
     year = {1977},
     doi = {10.14708/ma.v5i11.1265},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v5i11.1265/}
}