https://www.elibrary.imf.org/view/books/082/465808-9781513595603-en/ch002.xml
https://towardsdatascience.com/create-predictive-models-in-r-with-caret-12baf9941236
https://www.ran.org/wp-content/uploads/2023/04/BOCC_2023_06-27.pdf
https://www.bruegel.org/dataset/national-policies-shield-consumers-rising-energy-prices