NEVES, Rafael. Grupo OPNI graffiti and urban violence in present-day Brazil. Street Art & Urban Creativity, [S. l.], v. 4, n. 2, 2018. DOI: 10.25765/sauc.v4i2.153. Disponível em: https://visualcompublications.es/SAUC/article/view/5521. Acesso em: 1 feb. 2025.