Ufnar, David F., Ludvigson, Greg A., Gonzalez, Luis, and Groecke, Darren R., 2008, Precipitation rates and atmospheric heat transport during the Cenomanian greenhouse warming in North America; estimates from a stable isotope mass-balance model: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 266, no. 1-2, p. 28-38.