HOLHOȘ, Adrian. “King-Type Operators Related to Squared Szász-Mirakyan Basis”. Studia Universitatis Babeș-Bolyai Mathematica 65, no. 2 (June 5, 2020): 279–290. Accessed February 5, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2545.