Yollanda, M., Devianto, D. and Permathasari, P. (2019) “Modeling of Indonesia Composite Index using Artificial Neural Network and Multivariate Adaptive Regression Spline (retracted)”, Jurnal Matematika MANTIK, 5(2), pp. 112–122. doi: 10.15642/mantik.2019.5.2.112-122.