M. M. Ndiaye and S. Diop, “Impact of the 2008 Crisis on Raw Materials and Food Products Prices in West-African Countries”, DEM, vol. 3, no. 2, pp. 250–266, Dec. 2018, Accessed: Sep. 12, 2025. [Online]. Available: https://ojs.fimagis.pl/index.php/demo/article/view/1134