“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 ), vol. 23, no. 2, Oct. 2021, pp. 29-46, https://doi.org/10.55562/jrucs.v23i2.476.