University extension in Brazil and its challenges during the COVID-19 pandemic. Research, Society and Development, [S. l.], v. 10, n. 3, p. e1210312991, 2021. DOI: 10.33448/rsd-v10i3.12991. Disponível em: https://rsdjournal.org/rsd/article/view/12991. Acesso em: 5 dec. 2025.