Mamchuev M. Boundary value problem for a system of partial differential equations with the Dzhrbashyan–Nersesyan fractional differentiation operators. M [Internet]. 2022 Jun. 30 [cited 2025 Sep. 4];106(2):143-60. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/532