GULUM, MS, M. S.; MURRAY, PHD, PE, S. L. Challenges faced during a mass emergency notification system implementation. Journal of Emergency Management, Weston, MA, USA, v. 9, n. 6, p. 29–38, 2011. DOI: 10.5055/jem.2011.0077. Disponível em: https://wmpllc.org/ojs/index.php/jem/article/view/1398. Acesso em: 2 may. 2024.