Chamidah N, Kurniawan A, Saifudin T. Designing Standard Growth Chart Based on Weight-For-Age Z-Score of Children in East Java Using Least-Square Spline Estimator. Contemp. Math. App [Internet]. 2022 Oct. 10 [cited 2024 Sep. 8];4(2):113-24. Available from: https://e-journal.unair.ac.id/CONMATHA/article/view/38917