Juharyan, A.K. “ANALITICAL DATABASE OF ARMENIAN OBSIDIAN SOURCES OBTAINED BY PORTABLE X-RAY FLUORESCENCE”. Proceedings of the YSU C: Geological and Geographical Sciences 51, no. 3 (244) (December 11, 2017): 159–165. Accessed November 23, 2024. https://journals.ysu.am/index.php/proceedings-geol-geogr/article/view/vol51_no3_2017_pp159-165.