TY - JOUR AU - L. Gajek AU - A. Lenic TI - An approximate necessary condition for the optimal bandwidth selector in kernel density estimation JO - Applicationes Mathematicae PY - 1993 SP - 123 EP - 138 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/am-22-1-123-138/ DO - 10.4064/am-22-1-123-138 LA - en ID - 10_4064_am_22_1_123_138 ER -