BOBRIK , R. V. On the root-mean-square stability of solutions for the system of linear differential equations with the Guassian coefficients. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 6, p. 778–780, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9290. Acesso em: 17 feb. 2026.