W. R. Schucany, John P. Sommers, Improvement of Kernel Type Density Estimators, Journal of the American Statistical Association, Vol. 72, No. 358 (Jun., 1977), pp ...

In the nonparametric setup, smooth density estimators are obtained by using a kernel function and it is used to account for contribution of each observation to the estimator. Generally, these kernel ...

Reynard Corporation - Circular Variable Neutral Density (CVND) Filters: Customizable Variable Density Functions in a Compact Footprint ...