TY - JOUR A1 - Marron, J. S. A1 - Nolan, D. T1 - Canonical kernels for density estimation Y1 - 1988 DO - 10.1016/0167-7152(88)90050-8 JF - Statistics & Probability Letters VL - 7 IS - 3 SP - 195 EP - -199 ER -