Bonar Kristanda, Marcel, and Seng Hansun. “Predicting Gross Domestic Product Using Weighted Exponential Moving Average on Phatsa Web Application”.
International Journal of Engineering and Technology, vol. 7, no. 4.40, Dec. 2018, pp. 137-40,
https://doi.org/10.14419/ijet.v7i4.40.24420.