Sadybekov, Makhmud Abdysametovich, Berikbol Tillabayuly Torebek, and Batirkhan Khudaybergenovich Turmetov. 2016. “Construction of Green’s Function of the Neumann Problem in a Ball”. Eurasian Mathematical Journal 7 (2):100-105. https://emj.enu.kz/index.php/main/article/view/638.