The eyes have it: human perception and anthropomorphic faces in world rock art

Watson, Ben
2011

The date and context of Neolithic rock art in the Sahara: engravings and ceremonial monuments from Messak Settafet (south-west Libya)

Lernia, Savino di, Gallinaro, Marina
2010

Wadi Sura: the Cave of Beasts

A rock art site in the Gilf Kebir

Kuper, Rudolph
2014