AHMAD, W.; KHAN, M. J. Petrography of The Upper Litra and Chaudhwan Formations, Upper Siwalik Group, Zinda Pir Anticline, Northern Sulaiman Range. Journal of Himalayan Earth Sciences, [S. l.], v. 24, n. 1, p. 191-202, 1991. Disponível em: http://ojs.uop.edu.pk/jhes/article/view/1402. Acesso em: 4 jan. 2025.