Akhmetkaliyeva, R., T. Mukasheva, and K. Ospanov. “Correct and Coercive Solvability Conditions for a Degenerate High Order Differential Equation”. Eurasian Mathematical Journal, vol. 14, no. 4, Dec. 2023, pp. 09-14, doi:10.32523/2077-9879-2023-14-4-09-14.