@article {3443,
	title = {Nonlinear Detection of Paleoclimate-variability Transitions Possibly Related to Human Evolution},
	journal = {Proceedings of the National Academy of Sciences},
	volume = {108},
	year = {2011},
	pages = {20422-20427},
	author = {Donges, Jonathan F. and Donner, Reik V. and Trauth, Martin H. and Marwan, Norbert. and Schellnhuber, Hans-Joachim and Kurths, J{\"u}rgen}
}
