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Zarubina Natalya V., Arbuzov Sergey I., Zhao Cunliang, Ivanov Vladimir V., Chekryzhov Igor Yu., Mashenkin Valery S., Blokhin Maksim G., Sun Yuzhuang, Ilenok Sergey S. «Rare-earth elements (La, Ce, Sm, Eu, Tb, Yb, Lu) in the coals of the North Asia (Siberia, Russian Far East, North China, Mongolia, Kazakhstan)» // Geosphere Research 2017. №4 C.6-27
Salihov Valeriy A. «Geological and economical (cost) valuation of non-ferrous and rare metals in coal fields and useful coproducts» // Tomsk State University Journal of Economics 2014. №1 (25) C.123-138