Ratnasari, Vita, I Nyoman Budiantara, and Andrea Tri Rian Dani. “Nonparametric Regression Mixed Estimators of Truncated Spline and Gaussian Kernel Based on Cross-Validation (CV), Generalized Cross-Validation (GCV), and Unbiased Risk (UBR) Methods”. International Journal on Advanced Science, Engineering and Information Technology 11, no. 6 (December 14, 2021): 2400–2406. Accessed July 22, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/14464.