Bình, Nguyễn Văn. “NGHIÊN CỨU VỀ TOURMALIN Ở HOẰNG HÓA, THANH HÓA”. <i>Vietnam Journal of Earth Sciences</i> 27, no. 1 (March 25, 2017): 78–81. Accessed April 4, 2026. https://vjst.vast.vn/jse/article/view/9393.