SAHRAOUI, H., S. KANZARI, M. HACHICHA, and H. J. MELLOULI. “Olive Mill Effluent Spreading Effects on Water Retention of Tunisian Sandy Loam Soil”. Walailak Journal of Science and Technology (WJST), vol. 11, no. 1, Nov. 2013, pp. 51-62, https://wjst.wu.ac.th/index.php/wjst/article/view/571.