ROSZKO-WÓJTOWICZ, Elżbieta; BIAŁEK, Jacek. Measurement of the average innovativeness change over time in the EU member states. Journal of Business Economics and Management, [S. l.], v. 20, n. 2, p. 268–293, 2019. DOI: 10.3846/jbem.2019.8337. Disponível em: https://btp.vilniustech.lt/index.php/JBEM/article/view/8337. Acesso em: 24 aug. 2025.