[1]
L. Ferrari, V. H. Garduño, F. Innocenti, P. Manetti, G. Pasquarè, y G. Vaggellis, «A widespread mafic volcanic unit at the base of the Mexican Volcanic Belt between Guadalajara and Querétaro», Geofis Int, vol. 33, n.º 1, pp. 107–123, ene. 1994.