Sources:
- Wiley-Blackwell Encyclopedia of Human Evolution. edited by Bernard Wood. Chichester: Blackwell Publishing, 2013, p. 317,
- Andrew J. Lawson: Painted Caves. Palaeolithic Rock Art in Western Europe. Oxford: Oxford University Press, 2012, p. 83.
- Claus-Joachim Kind, "Das Lonetal - eine altsteinzeitliche Fundlandschaft von Weltrang". Archäologie in Deutschland (in German). WBG., 2016, pp. 22–25.