“A Comparison between (ECM) and (KNN) Methods for the Multivariate skew-normal model with incomplete data” (2021) Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), 46(1), pp. 377–393. doi:10.55562/jrucs.v46i1.89.