Bình, Nguyễn Văn. “NGHIÊN CỨU VỀ TOURMALIN Ở HOẰNG HÓA, THANH HÓA”. Vietnam Journal of Earth Sciences 27, no. 1 (March 25, 2017): 78–81. Accessed October 4, 2024. https://vjs.ac.vn/index.php/jse/article/view/9393.