-, -, ظافر, and خلود. “Comparison of Spline Methods for Estimating Nonparametric Regression Curve”. IRAQI JOURNAL OF STATISTICAL SCIENCES 5, no. 1 (June 25, 2025): 40–62. Accessed August 3, 2025. https://rjps.uomosul.edu.iq/index.php/stats/article/view/21022.