Sobolevskyi, R., Zuievska, N., Korobiichuk, V., Tolkach, O. and Kotenko, V. 2016. Cluster analysis of fracturing in the deposits of decorative stone for the optimization of the process of quality control of block raw material. Eastern-European Journal of Enterprise Technologies. 5, 3 (83) (Oct. 2016), 21–29. DOI:https://doi.org/10.15587/1729-4061.2016.80652.