Chicxulub crater: A possible Cretaceous-Tertiary boundary impact crater on the Yucatan peninsula, Mexico,
Hildebrand, A. R., G. T. Penfield, et al. (1991),
Geology, 19 p. 867,
10.1130/0091-7613(1991)019<0867:CCAPCT>2.3.CO;2.