CĂTINAȘ, Teodora, and Andra MALINA. “Shepard Operator of Least Squares Thin-Plate Spline Type”. Studia Universitatis Babeș-Bolyai Mathematica 66, no. 2 (June 30, 2021): 257–265. Accessed February 5, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1295.