Air quality variations in Northern South America during the COVID-19 lockdown

por Mendez-Espinosa, Juan F., Rojas, Nestor Y., Vargas, Jorge, Pachón, Jorge E., Belalcazar, Luis C., Ramírez, Omar
Publicado 2020

PM(2.5) emissions, concentrations and air quality index during the COVID-19 lockdown()

por Rojas, Néstor Y., Ramírez, Omar, Belalcázar, Luis Carlos, Méndez-Espinosa, Juan Felipe, Vargas, Jorge Mario, Pachón, Jorge Eduardo
Publicado 2021