Reference

Stefan Van der Wal, Kyle W. R. Taylor, Ellen Thomas, S. J. Gibbs, Rich D. Pancost, James C. Zachos, Lucas J. Lourens, Appy Sluijs (2011): Orbital forcing and carbon cycle variations in relation to changes in climate and ecosystem in late Paleocene – Berichte der Geologischen Bundesanstalt – 85: 163.