BRONISZ, U.; HEIJMAN, W.; VAN OPHEM, J. The Impact of Intellectual and Social Capital on the Competitiveness of Polish Regions. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 14, n. 4, p. 25–36, 2014. DOI: 10.22630/PRS.2014.14.4.67. Disponível em: https://prs.sggw.edu.pl/article/view/4682. Acesso em: 4 maj. 2024.