Strożek, Piotr. “Comparative Analysis of the Level of Knowledge-Based Part of Economies in European Union Countries With KAM Methodology”. Comparative Economic Research. Central and Eastern Europe 15, no. 4 (March 8, 2013): 249–263. Accessed May 18, 2024. https://czasopisma.uni.lodz.pl/CER/article/view/6845.