Bonar Kristanda, Marcel, and Seng Hansun. “Predicting Gross Domestic Product Using Weighted Exponential Moving Average on Phatsa Web Application”. International Journal of Engineering & Technology 7, no. 4.40 (December 16, 2018): 137–140. Accessed April 30, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/24420.