KHAN, S. R.; KHAN, M. A. Late Proterozoic stratigraphy of the Swabi area, NWFP, N. Pakistan. Journal of Himalayan Earth Sciences, [S. l.], v. 27, n. 1, p. 57-68, 1994. Disponível em: http://ojs.uop.edu.pk/jhes/article/view/1460. Acesso em: 1 jan. 2025.