الأنصاري د. أ. ع. ا. م. . and الرازحي د. ع. ا. أ. . (2023) “A comparison between Robust regression analysis methods Applied statistical study of the most important demographic factors on the total fertility rate in Yemen for the period (1990-2013)”., Journal of Social Studies, 29(3), pp. 23–47. doi: 10.20428/jss.v29i3.2160.