Salgado Carneiro Zenha, Paulo, José Francisco Belfort Brito, Mauro Santos, and Poliano Bastos da Cruz. 2024. “The Impacts of the COVID-19 Pandemic on the Opening and Closing of Companies and on ICMS Tax Collection in the State of Maranhão from 2019 to 2021”. International Seven Journal of Health Research 3 (1):121-36. https://doi.org/10.56238/isevjhv3n1-013.