LEVESON, N. Improving the Standard Risk Matrix using STPA. Journal of System Safety, [S. l.], v. 55, n. 2, p. 13–22, 2019. DOI: 10.56094/jss.v55i2.44. Disponível em: https://jsystemsafety.com/index.php/jss/article/view/44. Acesso em: 27 jun. 2026.