CERRATO-ÁLVAREZ, M.; MIRÓ-RODRÍGUEZ, C.; PINILLA-GIL, E. EFFECT OF COVID-19 LOCKDOWN ON AIR QUALITY IN URBAN AND SUBURBAN AREAS OF EXTREMADURA, SOUTHWEST SPAIN: A CASE STUDY IN USUALLY LOW POLLUTED AREAS. Revista Internacional de Contaminación Ambiental, [S. l.], v. 37, p. 237–247, 2021. DOI: 10.20937/RICA.54145. Disponível em: https://www.revistascca.unam.mx/rica/index.php/rica/article/view/RICA.54145. Acesso em: 23 ene. 2022.