DECYK, Kamil. Innovation activity in European Union service sector: Similarities or differences?. International Entrepreneurship Review, Poland, v. 11, n. 2, p. 135–154, 2025. DOI: 10.15678/IER.2025.1102.08. Disponível em: https://ier.uek.krakow.pl/index.php/pm/article/view/2249.. Acesso em: 1 jul. 2025.