Mustafa M. Abdalhusein, et al. “INVESTIGATION OF THE COLLAPSE POTENTIAL OF GYPSUM SAND SOIL IN UNSATURATION CONDITIONS USING A MODIFIED OEDOMETER”. Operational Research in Engineering Sciences: Theory and Applications, vol. 7, no. 1, Mar. 2024, http://oresta.org/menu-script/index.php/oresta/article/view/727.