Cramer, Benjamin S.; Kent, Dennis V. (2005): Bolide summer; the Paleocene/Eocene Thermal Maximum as a response to an extraterrestrial trigger. Elsevier, Amsterdam, Netherlands, In: Lamolda, Marcos A. (editor), Maurrasse, Florentin J. M. R. (editor), Paul, Christopher R. C. (editor), Paleobiotic changes in Earth history and their causes, 224 (1-3), 144-166, georefid:2005-062766