Cengizci, Süleyman, Devendra Kumar, and Mehmet Tarık Atay. “A Semi-Analytic Method for Solving Singularly Perturbed Twin-Layer Problems With a Turning Point”. Mathematical Modelling and Analysis 28, no. 1 (January 19, 2023): 102–117. Accessed November 22, 2024. https://jest.vgtu.lt/index.php/MMA/article/view/14953.