“PERBANDINGAN METODE CROSS VALIDATION DAN GENERALIZED CROSS VALIDATION DALAM REGRESI NONPARAMETRIK BIRESPON SPLINE”. Jurnal Varian 1, no. 1 (September 27, 2017): 43–53. Accessed September 24, 2025. https://journal.universitasbumigora.ac.id/Varian/article/view/49.