LigunA. A., and ShumeikoA. A. “Recovery of a Function from Information on Its Values at the Nodes of a Triangular Grid Based on Data Completion”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 3 (March 25, 2002): 332-341. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4069.