@article{Gramacki:2016,
author
=
"A.Gramacki and J.Gramacki",
title
=
"FFT-Based Fast Computation of Multivariate Kernel Density Estimators with Unconstrained Bandwidth Matrices",
journal
=
"Journal of Computational and Graphical Statistics",
volume
=
"26",
number
=
"2",
pages
=
"459--462",
year
=
"2016",
}