Bolle, Marie, Thierry Adatte, Gerta Keller, Katharina von Salis, and Steve Burns. 1999. “The Paleocene-Eocene Transition in the Southern Tethys (Tunisia); Climatic and Environmental Fluctuations”. Bulletin De La Société Géologique De France 170: 661.

Bolle, Marie, Thierry Adatte, Gerta Keller, Katharina von Salis, and Steve Burns. 1999. “The Paleocene-Eocene Transition in the Southern Tethys (Tunisia); Climatic and Environmental Fluctuations”. Bulletin De La Societe Geologique De France 170: 661-80. Referenced from bsgf.geoscienceworld.org: The Paleocene-Eocene transition in the southern Tethys (Tunisia); climatic and environmental fluctuations.