%0 Journal Article %A Laurent, Béatrice %T Adaptive estimation of a quadratic functional of a density by model selection %J ESAIM: Probability and Statistics %D 2005 %P 1-18 %V 9 %I EDP-Sciences %U http://geodesic.mathdoc.fr/articles/10.1051/ps:2005001/ %R 10.1051/ps:2005001 %G en %F PS_2005__9__1_0