Boichuk О. A., and S. M. Chuiko. “Method of Accelerated Convergence for the Construction of Solutions of a Noetherian Boundary-Value Problem”. Ukrains’kyi Matematychnyi Zhurnal 60, no. 12 (December 25, 2008): 1587–1601. Accessed April 11, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/3273.