Portnov, V., E. Mussina, M. Ponomareva, and M. Reva. “RARE EARTH MINERALIZATION OF HIGH-PRESSURE SHALES OF THE SITE ‘RARE-EARTH-EAST-1’ (IRTYSH AREA CRUMPLED ZONE)”. Visnyk of Taras Shevchenko National University of Kyiv. Geology 2, no. 77 (January 16, 2025): 72–76. Accessed February 14, 2026. https://geology.bulletin.knu.ua/article/view/1467.