VALEYEV, K. G.; DZHALLADOVA, I. A. Second-order moment equations for a system of differential equations with random right-hand side. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 5, p. 687–691, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3788. Acesso em: 6 dec. 2025.