[1]
“Asymptotic approximation for the solution to a boundary-value problem with varying type of boundary conditions in a thick two-level junction”, НК, vol. 9, no. 3, pp. 336–355, Sep. 2006, Accessed: Jan. 21, 2026. [Online]. Available: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/401