Xuân, Phạm Tích, et al. “Sericite Ore Prospects in Huong Son - Ky Anh Region (Ha Tinh Province)”. <i>Vietnam Journal of Earth Sciences</i>, vol. 35, no. 2, Feb. 2014, pp. 97-106, doi:10.15625/0866-7187/35/2/3652.