51st International October Conference on Mining and Metallurgy (IOC2019) 16-19 October 2019, Bor Lake, Serbia
J. Min. Metall. Sect. B-Metall. 55 (1) B (2019) i-i.
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6th International Student Conference on Technical Sciences (ISC2019) 25-27 September 2019, Technical faculty in Bor, Serbia
J. Min. Metall. Sect. B-Metall. 55 (1) B (2019) iii-iv.
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