de Smet, Klaas. Status of the Nile crocodile in the Sahara desert. Hydrobiologia (SpringerLink). January 1998, 391 (1–3): 81–86. doi:10.1023/A:1003592123079. Another relict population [of Nile crocodiles], in the Tagant hills of Mauretania, was found to be probably extinct in 1996.
