Mocodompis, Marklif Esriy, Deiby Tineke Salaki, and Djoni Hatidja. “Application of Nonparametric Spline Regression and Fourier Series to Model Gross Regional Domestic Product in Indonesia”. Jurnal Ilmiah Sains 23, no. 2 (October 30, 2023): 168–174. Accessed December 5, 2024. https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/48868.