DIN, F.; RAFIQ, M.; MOHAMMAD, N. Strength properties of various building stones of N.W.F.P., Pakistan. Journal of Himalayan Earth Sciences, [S. l.], v. 26, n. 1, p. 119-126, 1993. Disponível em: http://ojs.uop.edu.pk/jhes/article/view/1450. Acesso em: 1 jan. 2025.