HAFUDH AL-DEFFA’E, Asa’d. The Effect of Pre-used Oil of Cars Mixed with Salt Resistance Cement on Collapsibility of Gypseous Soil. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 13, n. 1, p. 47–57, 2009. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1528.. Acesso em: 19 apr. 2025.