1. Utilisation de l'ivoire du site d'Yudinovo sur la plaine russe;Abramova,1995
2. Paleolithic technology and human evolution;Ambrose;Science,2001
3. Owls, Caves and Fossils;Andrews,1990
4. The Lower Paleolithic site of La Polledrara di Cecanibbio (Rome, Italy);Anzidei,1992
5. Two Middle Pleistocene sites near Rome (Italy): La Polledrara di Cecanibbio and Rebibbia-Casal de' Pazzi;Anzidei,1999