Makhoukhi, B., Didi, M.A., Villemin, D. and Azzouz, A. 2009. Acid activation of Bentonite for use as a vegetable oil bleaching agent. Grasas y Aceites. 60, 4 (Sep. 2009), 343–349. DOI:https://doi.org/10.3989/gya.108408.