For citations:

Marukovich E.I., Patuk E.M., Markov A.P., Efimenko E.V., Bondarev O.Yu. VISUAL AND OPTICAL DEFECTOSCOPY OF THE CASTINGS AND ROLLING SURFACES. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2014;(2):57-59. (In Russ.) https://doi.org/10.21122/1683-6065-2014-2-57-59