1. Nickel Price Has Risen to a Maximum Since the Beginning of 2011. https://quote.rbc.ru/news/article/ 621369d59a79471446e333ae. Cited February 24, 2022.
2. C. R. M. Butt and D. Cluzel, “Nickel laterite ore deposits: weathered serpentinites,” Elements 2 (9), 123–128 (2013).
3. R. A. Pakhomov and R. V. Starykh, “Preliminary reduction of oxidized nickel ores,” Russ. Metall. (Metally), No. 11, 853–860 (2014).
4. O. V. Bazhenova, A. S. Medvedev, M. A. Medkov, and A. Yu. Chirikov, “Versions of hydrometallurgical processing of the technical wastes of oxidized nickel ores,” in Proceedings of IV International Congress Nonferrous Metals-2012 (Krasnoyarsk, 2012), pp. 139–143.
5. L. V. Igrevskaya, “Trend of development of the nickel industry. The world and Russia,” Extended Abstract of Doctoral (Geol.-Min.) Dissertation, Moscow, 2009.