1.
Lapshin AL. Equations for second moments of solutions of a system of linear differential equations with random semi-Markov coefficients and random input. Ukr. Mat. Zhurn. [Internet]. 1999Jun.25 [cited 2024May12];51(6):776–783. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4664