Martynenko, Alina, and Petro Pererva. 2020. “Formation of Comparable Prices for Innovative Products for the Period of Their Life Cycle”. Scientific Journal of Bielsko-Biala School of Finance and Law 24 (3). Bielsko-Biała, PL:9-14. https://doi.org/10.19192/wsfip.sj3.2020.2.