Reference:Hays et al. 1976
From Global Warming Art
Hays, J. D., John Imbrie, and N. J. Shackleton (1976). "Variations in the Earth's Orbit: Pacemaker of the Ice Ages". Science 194 (4270): 1121 - 1132. DOI:10.1126/science.194.4270.1121.
Usage
The following pages on Global Warming Art refer to this reference:
