Lessoued, Ridha, and Fatiha Souahi. “Multi-Response Modeling and Optimisation of Wastewater Pretreatment by Bentonite”. Materials and Biomaterials Science 3, no. 2 (April 17, 2020): 054–058. Accessed February 25, 2021. http://mbmscience.com/index.php/mbms/article/view/32.