MOORHEAD, Simon. The Victorian Time Signal Service. Journal of Telecommunications and the Digital Economy, [S. l.], v. 2, n. 4, p. 10, 2020. DOI: 10.18080/jtde.v2n4.278. Disponível em: https://mail.jtde.telsoc.org/index.php/jtde/article/view/278. Acesso em: 8 jan. 2025.