BLACKS F., 2004.- Diagnosis on mortality of bats through collisions in the Lot, on the A20 between Cahors Nord and the Dordogne, and development proposals. Appraisal conducted by Natural Spaces Midi-Pyrenees for the consulting firm Savine. 16 pages.
Neri F., 2004.- Utambuzi juu ya vifo vya watoto wa popo kupitia collisions katika Lutu, juu ya A20 kati ya Cahors Nord na Dordogne, na maendeleo ya mapendekezo . Tathmini uliofanywa na Nafasi za Midi-Pyrenees kwa Savine kampuni ya ushauri wa . 16 kurasa .