Grygoriev, S.M. and Petryshchev, A.S. 2014. Perfection of the method of definition of degree of restoration of chromium – containing oxide raw materials. Reporter of the Priazovskyi State Technical University. Section: Technical sciences. 23 (Sep. 2014), 56–62. DOI:https://doi.org/10.31498/2225-6733.23.2011.22891.