Zachos, J. C.؛ Kump, L. R. (2005). "Carbon cycle feedbacks and the initiation of Antarctic glaciation in the earliest Oligocene". Global and Planetary Change. ج. 47 ع. 1: 51–66. Bibcode:2005GPC....47...51Z. DOI:10.1016/j.gloplacha.2005.01.001.
Bowen؛ وآخرون (2015). "Two massive, rapid releases of carbon during the onset of the Palaeocene–Eocene thermal maximum". Nature. ج. 8 ع. 1: 44–47. Bibcode:2015NatGe...8...44B. DOI:10.1038/ngeo2316.
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Zachos, J. C.؛ Kump, L. R. (2005). "Carbon cycle feedbacks and the initiation of Antarctic glaciation in the earliest Oligocene". Global and Planetary Change. ج. 47 ع. 1: 51–66. Bibcode:2005GPC....47...51Z. DOI:10.1016/j.gloplacha.2005.01.001.
Bowen؛ وآخرون (2015). "Two massive, rapid releases of carbon during the onset of the Palaeocene–Eocene thermal maximum". Nature. ج. 8 ع. 1: 44–47. Bibcode:2015NatGe...8...44B. DOI:10.1038/ngeo2316.