Juharyan, A.K. “THE PRINCIPLES OF CHOICE OF ARMENIAN OBSIDIAN SOURCES IN BRONZE AGE, OBTAINED BY PXRF ANALYSIS”. Proceedings of the YSU C: Geological and Geographical Sciences 52, no. 1 (245) (April 16, 2018): 20–26. Accessed July 22, 2024. https://journals.ysu.am/index.php/proceedings-geol-geogr/article/view/vol52_no1_2018_pp020-026.