M. S. Slimani, H. Ahlafi, H. Moussout, F. Boukhlifi, and O. Zegaoui, “Adsorption of Hexavalent Chromium and phenol onto Bentonite Modified With HexaDecylTriMethylAmmonium Bromide (HDTMABr)”, JAC, vol. 8, no. 2, pp. 1602–1611, Dec. 2012.