“…Currently available literature on EI is quite elaborate. It mainly covers the following research areas: conceptualization of the phenomenon (Fussler and James, 1996;Rennings, 2000;OECD, 2011;Vallet et al, 2016;Veugelers, 2016) identification of factors and barriers to eco-innovation (Kemp and Pearson, 2008;Huang et al, 2017;Bendell, 2017;Cai and Li, 2018), methods of measurement and assessment of eco-innovation levels (Kemp and Pearson, 2008;Kobryń and Prystrom, 2017;García-Granero, 2018), and effects of eco-innovation processes, including impact on competitiveness at different levels of management (Kasztelan and Kijek, 2015;Range and Sandberg, 2016;Braungardt et al, 2016).…”