Nesterenko, A. N., and G. V. Radzievskii. “Multiparameter Inverse Problem of Approximation by Functions With Given Supports”. *Ukrains’kyi Matematychnyi Zhurnal* 58, no. 8 (August 25, 2006): 1116–1127. Accessed February 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3517.