Ban, To Xuan, Nguyen Khac Giang, Tran Van Duc, and Le Tien Dung. “Deposit Potential and Distribution of Cobalt and Nickel in the Sludge of Chromite Placer Mining Process at Nui Nua Ultramafic Massif Area, Thanh Hoa Province, Vietnam”. Geology, Geophysics and Environment 50, no. 4 (December 18, 2024): 383–400. Accessed April 8, 2025. https://journals.agh.edu.pl/geol/article/view/6344.