Correlated terrestrial and marine evidence for global climate changes before mass extinction at the Cretaceous-Paleogene boundaryv. 100National Academy of Sciences (U.S.)599-604
Wilf, Peter, Johnson, Kirk R., and Huber, Brian T. 2003. "Correlated terrestrial and marine evidence for global climate changes before mass extinction at the Cretaceous-Paleogene boundary." Proceedings of the National Academy of Sciences of the United States of America, 100 599–604.