ZYGMUNT, A. R&D Expenditures in Poland. Voivodship Perspective. Regional Barometer. Analyses & Prognoses, [S. l.], v. 12, n. 2, p. 13–20, 2014. DOI: 10.56583/br.1048. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/1048. Acesso em: 3 jul. 2024.