de Freitas, J.I. and Rodrigo 2021. Mathematical modelling and analysis of social distancing public actions for restraining Covid-19 in Araranguá/SC. Revista Thema. 20, (Dec. 2021), 361–386. DOI:https://doi.org/10.15536/thema.V20.Especial.2021.361-386.2021.