[1]
Alva Valdivia, L.M., Rosales, M.C., Benammi, M., Grajales Nishimura, M., Gogitchaichvili, A. and Urrutia Fucugauchi, J. 2002. Reconnaissance microfossil and magnetic stratigraphy of the Miocene Sayula-Isla sequence, Veracruz, Mexico. Geofisica Internacional. 41, 2 (Apr. 2002), 151–161. DOI:https://doi.org/10.22201/igeof.00167169p.2002.41.2.283.