1. Pliocene biostratigraphy of DSDP sites 111 and 116 from the North Atlantic Ocean and the age of northern hemisphere glaciation;Backman;Stockholm Contrib. Geology,1979
2. Pliocene Discoaster abundance variations, Deep Sea Drilling Project site 606: Biochronology and paleoenvironmental implications;Backman;Initial Rep. Deep Sea Drill. Proj.,1986
3. Obliquity and precession for the last 5,000,000 years;Berger;Astron. Astrophys.,1976
4. Long-term variations of caloric insolation resulting from the Earth's orbital elements;Berger;Quat. Res.,1978
5. Milankovitch and Climate