6Vasily N. Moraru. Structure formation of alkylammonium montmorillonites in organic media[J]. Applied Clay Science , 2001,19:11 -26.
7K Khatib, etc. Study of the structure of dimethyldioc-tadecylammonium- montmorillonite by small angle X - ray scattering [J]. Journal of Colloid and Interface Science, 1995, 172:317 -323.