MOORHEAD, S. Introduction of Crossbar Switching Equipment to the Australian Telephone Network. Journal of Telecommunications and the Digital Economy, [S. l.], v. 6, n. 1, p. 67-83, 2018. DOI: 10.18080/jtde.v6n1.145. Disponível em: https://jtde.telsoc.org/index.php/jtde/article/view/145. Acesso em: 2 mar. 2021.