3.
Galos i in. 2015 – Galos, K., Nieć, M., Saługa, P. i Uberman, R. 2015. The basic problems of mineral resources valuation methodologies within the framework of System of Integrated Environmental and Economic Accounts. Gospodarka Surowcami Mineralnymi – Mineral Resources Management t. 31, z. 4, s. 5–20.