When the earth stood still: air pollution during the Covid-19 quarantine – the case of São Paulo and Rio de Janeiro. Sustainability in Debate, [S. l.], v. 12, n. 1, p. 12–28, 2021. DOI: 10.18472/SustDeb.v12n1.2021.36259. Disponível em: https://periodicostestes.bce.unb.br/index.php/sust/article/view/36259. Acesso em: 17 apr. 2025.