Dekhkonov, F.N. “On the Time-Optimal Control Problem for a Fourth Order Parabolic Equation in a Two-Dimensional Domain”. Bulletin of the Karaganda University. Mathematics Series 114, no. 2 (June 28, 2024): 57–70. Accessed July 5, 2025. https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/745.