C. T. Chi, J. W. Geissman, H. V. Quy, T. V. Anh, and N. T. P. Dung, “Paleomagnetism of upper permian basaltic rocks of Cam Thuy formation from Thuan Chau locality, Son La, Northwest Vietnam”, Vietnam J. Earth Sci., vol. 37, no. 4, pp. 289–298, Dec. 2015.