Dudkin M. E., and Dyuzhenkova O. Yu. “Two-Dimensional Half-Strong Real Moment Problem and the Corresponding Block Matrices. Part II”. Ukrains’kyi Matematychnyi Zhurnal 72, no. 10 (October 25, 2020): 1335 -1364. Accessed December 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/6231.