Cameron, K., Cameron, M. y Barreiro, B. (1986) «Origin of voluminous mid-tertiary ignimbrites of the batopilas region, Chihuahua: implications for the formation of continental crust beneath the Sierra Madre Occidental», Geofísica Internacional, 25(1), pp. 39–59. doi: 10.22201/igeof.00167169p.1986.25.1.800.