Meyers, Philip A. (1992): Changes in organic carbon stable isotope ratios across the K/T boundary; global or local control?. Elsevier, Amsterdam, Netherlands, In: Macko, Stephen A. (editor), Engel, Michael H. (editor), Isotope fractionations in organic matter; biosynthetic and diagenetic processes, 101 (3-4), 283-291, georefid:1992-065642