Bardaro, Carlo, Loris Faina, and Ilaria Mantellini. “Quantitative Approximation Properties for Iterates of Moment Operator”. Mathematical Modelling and Analysis 20, no. 2 (March 30, 2015): 261-272. Accessed November 25, 2024. https://jau.vgtu.lt/index.php/MMA/article/view/998.