Allan, J. F.; Nelson, S. A.; Luhr, J. F.; Carmichael, I. S. E.; Wopat, M.; Wallace, P. J. (1991): Pliocene-Holocene rifting and associated volcanism in Southwest Mexico; an exotic terrane in the making. American Association of Petroleum Geologists, Tulsa, OK, United States, In: Dauphin, J. Paul (editor), Simoneit, Bernd R. T. (editor), The Gulf and Peninsular Province of the Californias, 47, 425-445, georefid:1995-057418