Melnyk, R., Tushnytskyy, R., Kvit, R. and Salo, T. 2020. Preliminary data classification by multilevel segmentation of histograms for clustering of hypercubes. Technology audit and production reserves. 6, 2(56) (Dec. 2020), 47–55. DOI:https://doi.org/10.15587/2706-5448.2020.220428.