Jenaliyev M, Amangaliyeva M, Imanberdiyev K. On the ill-posed problem for the Poisson equation. M [Internet]. 2018 Jun. 30 [cited 2025 Oct. 13];90(2):72-9. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/226