Hildebrand, A. R., Connors, M., Pilkington, M., Ortiz-Aleman, C., Chavez, R. E., Urrutia-Fucugauchi, J., Graniel-Castro, E., Camara-Zi, A., & Vasquez, J. (1995). Yucatan Karst Features and the Size of Chicxulub Crater.76, F576.