WARFIELD, Bob. Book review of ‘Network services: QoS, Signalling, Processes’ by Harry Perros. Journal of Telecommunications and the Digital Economy, [S. l.], v. 2, n. 3, p. 4, 2020. DOI: 10.18080/jtde.v2n3.293. Disponível em: https://jtde.telsoc.org/index.php/jtde/article/view/293. Acesso em: 16 may. 2025.