Каржавин Владимир Константинович. “Diamonds of Russia’s «midnight Lands» : DOI: 10.47765/0869-5997-2021-10019”. Ores and Metals (Rudy i metally) , no. 3 (November 12, 2021). Accessed February 23, 2026. https://rm.tsnigri.ru/index.php/main/article/view/150.