Tavio T, Budiantara IN, Kusuma B. Spline Nonparametric Regression Analysis of Stress-Strain Curve of Confined Concrete. ced [Internet]. 2008May30 [cited 2024Apr.29];10(1):pp. 14-27. Available from: https://ced.petra.ac.id/index.php/civ/article/view/16727