%0 Journal Article %A Ferger, Dietmar %A Venz, John %T Density estimation via best $L^2$-approximation on classes of step functions %J Kybernetika %D 2017 %P 198-219 %V 53 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14736/kyb-2017-2-0198/ %R 10.14736/kyb-2017-2-0198 %G en %F 10_14736_kyb_2017_2_0198