NOVIKOV, S. V.; PROSVIRINA, N. V. ?lusters classification in the modern innovation economy. Amazonia Investiga, [S. l.], v. 8, n. 19, p. 620–630, 2019. Disponível em: https://mail.amazoniainvestiga.info/index.php/amazonia/article/view/277. Acesso em: 26 sep. 2025.