Claveria, Oscar, Enric Monte, and Salvador Torra. “Data Pre-Processing for Neural Network-Based Forecasting: Does It Really Matter?”. Technological and Economic Development of Economy 23, no. 5 (June 17, 2017): 709-725. Accessed January 28, 2022. https://journals.vgtu.lt/index.php/TEDE/article/view/681.