Khompysh, Kh., and N.K. Nugymanova. “Kelvin-Voigt Equations With Memory: Existence, Uniqueness and Regularity of Solutions”. Bulletin of the Karaganda University. Mathematics Series 112, no. 4 (December 29, 2023): 66–78. Accessed August 28, 2025. http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/606.