Delvaux, B., Mestdagh, MM., Vielvoye, L., & Herbillon, AJ. (1989). Xrd, Ir and Esr Study of Experimental Alteration of Al-nontronite Into Mixed-layer Kaolinite Smectite. Clay Minerals : journal of the European Clay Groups, 24(4), 617-630. https://doi.org/10.1180/claymin.1989.024.4.05 (Original work published 1989)