Natheer Ismael Kasim, Mohammad, محمد, Younis Hazim Ismaeel, and یونس. 2013. “Detection of Outliers in a Multivariate Linear Regression Model Using Gibbs Observation”. Journal of Education and Science (JES) 26 (1):149-61. https://doi.org/10.33899/edusj.2013.89420.