DEKHKONOV, F.N. On the time-optimal control problem for a heat equation. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 111, n. 3, p. 28–38, 2023. DOI: 10.31489/2023m3/28-38. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/580. Acesso em: 4 sep. 2025.