Sadybekov, Makhmud Abdysametovich, Berikbol Tillabayuly Torebek, and Batirkhan Khudaybergenovich Turmetov. “Construction of Green’s Function of the Neumann Problem in a Ball”. Eurasian Mathematical Journal 7, no. 2 (June 30, 2016): 100–105. Accessed September 30, 2025. https://emj.enu.kz/index.php/main/article/view/638.