“Non Parametric Estimator For The Multivariate Probability Density Function”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 23, no. 2 (October 26, 2021): 29–46. Accessed July 21, 2026. https://jrucs.iq/index.php/JAUCS/article/view/476.