SOMOGYI, Ildiko, and Anna SOÓS. “Spline and Fractal Spline Interpolation”. Studia Universitatis Babeș-Bolyai Mathematica 60, no. 2 (June 30, 2015): 193–199. Accessed July 13, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5717.