Muratbekov M, Igisinov S, Musilimov B, Makulbekova R. On the spectral properties of a class of high-order differential operators with operator coefficients. M [Internet]. 2020 Jun. 30 [cited 2025 Dec. 8];2(98):110-24. Available from: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/346