[1]
Gogichaishvili, A., Martin–del–Pozo, A.L., Urrutia–Fucugauchi, J. y Soler–Arechalde, A.M. 2007. Human Footprints found in Central Mexico could be at least 40,000 years old. Geofísica Internacional. 46, 1 (ene. 2007), 86–87. DOI:https://doi.org/10.22201/igeof.00167169p.2007.46.1.2154.