Neoproterozoic(?) to Pennsylvanian inner-shelf, miogeoclinal strata in Sierra Agua Verde, Sonora, Mexico - Stewart, John H.; Poole, Forrest; Harris, Anita; Repetski, John; Wardlaw, Bruce; Mamet, Bernard; Morales-Ramirez, J. (Revista Mexicana de Ciencias Geológicas, 1999)