Li, Hongliang, Yunliang Zhao, Shaoxian Song, and Yuri Nahmad. 2015. “Comparison of Ultrasound Treatment With Mechanical Shearing for Montmorillonite Exfoliation in Aqueous Solutions”. Journal of Minerals and Materials Research 2 (1):1-12. https://doi.org/10.18488/journal.86/2015.2.1/86.1.1.12.