Ashyralyev A, Ashyralyyev C, Zvyagin V. A note on well-posedness of source identification elliptic problem in a Banach space. M [Internet]. 2020 Sep. 30 [cited 2025 Sep. 5];99(3):96-104. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/393