A. Ashyralyev, “On the problem of determining the parameter of a parabolic equation”, Ukr. Mat. Zhurn., vol. 62, no. 9, pp. 1200–1210, Sep. 2010, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2948