WARFIELD, B. . 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://mail.jtde.telsoc.org/index.php/jtde/article/view/293. Acesso em: 4 jul. 2024.