Vintilă, Georgeta, Mihaela Onofrei, and Åžtefan Cristian Gherghina. “Multidimensional Data Analysis towards Assessing the European Education Systems”. European Journal of Sustainable Development 6, no. 2 (June 1, 2017): 69. Accessed September 19, 2024. https://www.ecsdev.org/ojs/index.php/ejsd/article/view/470.