DE POURBAIX , Paweł; WARZYBOK , Agnieszka. Open Innovations - Situation, Conditions, and Activity of Enterprises. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 6, n. 6, p. 18–30, 2018. DOI: 10.18559/SOEP.2018.6.2. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3824. Acesso em: 3 sep. 2026.