Holub, A. P., & Chernetska, L. O. (2013). Two-Dimensional Generalized Moment Representations and Rational Approximations of Functions of Two Variables. Ukrains’kyi Matematychnyi Zhurnal, 65(8), 1035–1058. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2489