DOYAR, B. V. R&D expenditures by field of science and GDP: Which causes which in Canada?. Economics and Business Letters, [S. l.], v. 8, n. 1, p. 31–40, 2019. DOI: 10.17811/ebl.8.1.2019.31-40. Disponível em: https://reunido.uniovi.es/index.php/EBL/article/view/12856. Acesso em: 31 jan. 2023.