PURNAMA, D. I. A Comparison between Nonparametric Approach: Smoothing Spline and B-Spline to Analyze The Total of Train Passengers in Sumatra Island. EKSAKTA: Journal of Sciences and Data Analysis, [S. l.], v. 20, n. 1, p. 73–80, 2020. DOI: 10.20885/EKSAKTA.vol1.iss1.art11. Disponível em: https://journal.uii.ac.id/Eksakta/article/view/12794. Acesso em: 3 may. 2024.