WANG, Xueyan et al. Impact of the COVID-19 lockdown on air pollution in an industrial city in Northeastern China. Journal of Environmental Engineering and Landscape Management, [S. l.], v. 31, n. 3, p. 219–231, 2023. DOI: 10.3846/jeelm.2023.19472. Disponível em: https://journals.vilniustech.lt/index.php/JEELM/article/view/19472. Acesso em: 19 jul. 2025.