RUSSNAK, J.; STADTMANN, G.; ZIMMERMANN, L. Does Okun’s law suffer from COVID-19? Evidence from Europe and the US. Economics and Business Letters, [S. l.], v. 12, n. 2, p. 165–171, 2023. DOI: 10.17811/ebl.12.2.2023.165-171. Disponível em: https://reunido.uniovi.es/index.php/EBL/article/view/19006. Acesso em: 5 dec. 2025.