BROTZGE, PHD, J. A.; DONNER, PHD, W. R. The general use of outdoor warning sirens: A preliminary survey of emergency managers. Journal of Emergency Management, Weston, MA, USA, v. 13, n. 1, p. 61–69, 2016. DOI: 10.5055/jem.2015.0218. Disponível em: https://wmpllc.org/ojs/index.php/jem/article/view/155. Acesso em: 23 nov. 2024.