Tursunov, D., K. Kozhobekov, and B. uulu Ybadylla. “Asymptotics of Solutions of Boundary Value Problems for the Equation εy’’ + xp(x)y’ - q(x)y = F”. Eurasian Mathematical Journal, vol. 13, no. 3, Sept. 2022, pp. 82-91, doi:10.32523/2077-9879-2022-13-3-82-91.