1. Canon of Insolation and the Ice Age Problem;Milankovitch,1941
2. Variations in the earth’s orbit: pacemaker of the ice ages;Hays;Science,1976
3. Support for the astronomical theory of climatic change;Berger;Nature,1977
4. The orbital theory of Pleistocene climate: support from a revised chronology of the marine δ18O record;Imbrie,1984
5. Oceanic response to orbital forcing in the late Quaternary: observational and experimental strategies;Imbrie,1989