1. Famous caves and catacombs described and illustrated;Adams,1886
2. Use of ultrasound detectors for bat studies in Europe: Experiences from field identification, surveys and monitoring;Ahlen;Acta Chiropterologica,1999
3. Grotta gigante;Arbulla,2011
4. Prehistoric rock art: Polemics and progress: The 2006 Rhind lectures for the Society of Antiquaries of Scotland;Bahn,2010
5. Lights and shadows on the conservation of a rock art cave: The case of Lascaux Cave;Bastian;International Journal of Speleology,2009