Boichenko, Victor, and Alexey Belov. “On σ-Entropy Analysis of Linear Stochastic Systems in State Space”. SYSTEM THEORY, CONTROL AND COMPUTING JOURNAL 1, no. 1 (June 30, 2021): 30–35. Accessed April 3, 2025. https://stccj.ucv.ro/index.php/stccj/article/view/8.