AKHTYAMOV, A. M.; SADOVNICHY, V. A.; SULTANAEV, Y. T. Inverse problem for the diffusion operator with symmetric functions and general boundary conditions. Eurasian Mathematical Journal, [S. l.], v. 8, n. 1, p. 10–22, 2017. Disponível em: https://emj.enu.kz/index.php/main/article/view/651. Acesso em: 3 jan. 2026.