Tutak, Magdalena, and Jarosław Brodny. “Progress towards the Innovation Potential of the European Union Member States Using Grey Relational Analysis and Multidimensional Scaling Methods”. Decision Making: Applications in Management and Engineering 6, no. 1 (April 8, 2023): 186–218. Accessed November 15, 2024. https://mail.dmame-journal.org/index.php/dmame/article/view/597.