INDUTNYI В. , MEREZHKO Н. and PIRKOVICH К. 2016. Commodity assessment of marble products. "INTERNATIONAL·SCIENTIFIC-·PRACTICAL·JOURNAL·COMMODITIES·AND·MARKETS". 35, 3 (Sep. 2016), 58–72. DOI:https://doi.org/10.31617/tr.knute.2020(35)05.