Faizin, N., Fauzan, A., & Primandari, A. (2023). IMPLEMENTATION OF THE STEP FUNCTION INTERVENTION AND EXTREME LEARNING MACHINE FOR FORECASTING THE PASSENGER’S AIRPORT IN SORONG. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, 17(1), 0535-0544. https://doi.org/10.30598/barekengvol17iss1pp0535-0544