KARTASHOV, M. V. Determination of the Spectral Index of Ergodicity of a Birth-and-Death Process. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 7, p. 889–897, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4488. Acesso em: 5 dec. 2025.