Kirin, R., P. Baranov, and I. Koziakov. “GEMOLOGICAL LAW OF UKRAINE: FORMATION PROBLEMS AND DEVELOPMENT PROSPECTS”. Visnyk of Taras Shevchenko National University of Kyiv. Geology 2, no. 93 (January 16, 2025): 6–14. Accessed February 15, 2026. https://geology.bulletin.knu.ua/article/view/959.