Ben Hamouda, Barkahoum, et al. “Elimination of Nitrates Contained in Leachate by Adsorption on Mixture Bentonite-Lime and Sodium Bentonite”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 26, no. 2, Oct. 2016, pp. 76-84, https://asrjetsjournal.org/American_Scientific_Journal/article/view/2228.