Ibraheem, O. and Jasim Mohammed, M. 2022. Use the robust RFCH method with a polychoric correlation matrix in structural equation modeling When you are ordinal data. IRAQI JOURNAL OF STATISTICAL SCIENCES. 19, 2 (Dec. 2022), 24–35. DOI:https://doi.org/10.33899/iqjoss.2022.0176201.