Wieczorek, Patrycja, and Eliza Frejtag-Mika. “Data Normalization and Linear Ordering of the European Union Countries Analysed With Regard to the Level of ICT Usage in Enterprises”. Social Inequalities and Economic Growth, no. 65 (March 31, 2021): 74–89. Accessed June 20, 2025. https://journals.ur.edu.pl/nsawg/article/view/1831.