1. Amended Technical Report on the Mactung Property, Yukon, Canada, Wardrop, Vancouver (2009), www.natungsten.com/i/pdf/Tech-Report-Mactung.pdf , acc. 09.20.2016.
2. B. K. Mikhailov, G. V. Sedel’nikova, B. I. Benevol’skii, and A. I. Romanchuk, “Innovative technology for processing stubborn and lean gold ores based on rational usage,” Rudy Metally, No. 1, 5–8 (2014).
3. I. G. Antropova, Physicochemical Production Bases for Sulfide Roasting of Oxidized Lead-Zinc Ore in a Heated Steam Atmosphere: Dissert. Cand. Techn. Sci., RAN SOBNP, Ulan Ude (2005).
4. Yu. N. Mansurov, V. P. Reva, S. Yu. Mansurov, and M. V. Beloborodov, “Economic and social basis of material science development in the far east,” Tsvet. Metally, No. 11, 88–93 (2016).
5. J. E. Athey, L. K. Freeman, L. A. Harbo, et al., “Alaska’s mineral industry 2013,” Spec. Report 69 (2014), https://doi.org/10.14509/29128 , acc. 09.20.2016.