KALINOWSKI, S.; PUZIAK, M. Does a financial crisis affect operating risk? Evidence from Polish listed companies. Economics and Business Review, [S. l.], v. 4, n. 1, p. 64–85, 2018. DOI: 10.18559/ebr.2018.1.5. Disponível em: https://journals.ue.poznan.pl/ebr/article/view/327. Acesso em: 3 jul. 2024.