Boynagryan, V. R. “GEOMORPHOLOGICAL AND NGINEERING-GEOLOGICAL CONDITIONS OF HALIDZOR–TATEV ROPEWAY CONSTRUCTION”. Proceedings of the YSU C: Geological and Geographical Sciences 45, no. 1 (224) (April 25, 2011): 24–29. Accessed November 24, 2024. https://pub.ysu.am/index.php/proceedings-geol-geogr/article/view/vol45_no1_2011_pp024-029.