Chen, Dongxia, et al. “Porosity Evolution in Tight Gas Sands of the Upper Triassic Xujiahe Formation, Western Sichuan Basin, China”. Revista Mexicana De Ciencias Geológicas, vol. 31, no. 3, Feb. 2015, pp. 361-75, https://rmcg.unam.mx/index.php/rmcg/article/view/241.