AGRATINI, Octavian. Book reviews: “Vijay Gupta, Michael Th. Rassias,” Moments of Linear Positive Operators and Approximation, Springer, 2019, viii + 96 p., ISBN 978-3-030-19454-3; 978-3-030-19455-0 (ebook). Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 64, n. 4, p. 601, 2019. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2384. Acesso em: 5 feb. 2025.