1. The Hrazdan Gorge Palaeolithic Project, 2008-2009;Adler,2012
2. Chemical differentiation of obsidian within the glass buttes complex, Oregon;Ambroz;J. Archaeol. Sci.,2001
3. An international research project on armenian archaeological sites: fission-track dating of obsidians;Badalian;Radiat. Meas.,2001
4. Trans-Caucasian Obsidian: the Exploitation of the Sources and their Distribution;Badalyan,2004
5. New data on the late prehistory of the Southern Caucasus. The excavations at Aratashen (Armenia): preliminary report;Badalyan,2007