Duru H, Shazhdekeyeva N, Adiyeva A. A robust numerical method for singularly perturbed Sobolev periodic problems on B-mesh. JMMCS [Internet]. 2024 Jul. 7 [cited 2024 Nov. 23];122(2):36-49. Available from: https://bm.kaznu.kz/index.php/kaznu/article/view/1438