Fajar, Muhammad. “An Application of Hybrid Forecasting Singular Spectrum Analysis – Extreme Learning Machine Method in Foreign Tourists Forecasting”. Jurnal Matematika MANTIK 5, no. 2 (October 27, 2019): 60–68. Accessed April 27, 2024. https://jurnalsaintek.uinsby.ac.id/index.php/mantik/article/view/496.