Early Holocene charcoal accumulations in the Aktun Ha cenote: Evidence of fire used by the first settlers of the Yucatán Peninsula, Mexico

1. López-Martínez, R.
2. Solleiro-Rebolledo, E.
3. Chávez-Vergara, B.
4. Díaz-Ortega, J.
5. Merino, A.
6. Trabanino García, F.A.
7. Velázquez-Morlet, A.
8. del Río-Lara, O.
9. Martos-López, L.A.
10. Terrazas-Mata, A.