Zagrebnov, Valentin A. “Non-Autonomous Dynamics and Product Formula Approximation of Solution Operator”. Discontinuity, Nonlinearity, and Complexity 9, no. 4 (December 1, 2020): 579–590. Accessed October 17, 2026. https://lhscientificpublishing.com/index.php/DNC/article/view/1804.