Conditional Residual Lifetimes of $(n-k+1)$-out-of-$n$ Systems with Mixed Erlang Components. Journal of Mathematical Study, [S. l.], v. 50, n. 1, p. 1–16, 2017. DOI: 10.4208/jms.v50n1.17.01. Disponível em: https://global-sci.com/index.php/jms/article/view/13288. Acesso em: 26 feb. 2026.