Optimization of operational costs of Call centers employing classification techniques. Research, Society and Development, [S. l.], v. 9, n. 11, p. e86691110491, 2020. DOI: 10.33448/rsd-v9i11.10491. Disponível em: https://www.rsdjournal.org/rsd/article/view/10491. Acesso em: 16 dec. 2025.