Maria V. Korovina, Hovik A. Matevossian, “Uniform Asymptotics of Solutions of Second-Order Differential Equations with Meromorphic Coefficients in a Neighborhood of Singular Points and Their Applications”, Mathematics, 10, no. 14, 2022, 2465
Maria Korovina, Ilya Smirnov, “Method for Investigation of Convergence of Formal Series Involved in Asymptotics of Solutions of Second-Order Differential Equations in the Neighborhood of Irregular Singular Points”, Axioms, 13, no. 12, 2024, 853