Mayr, Eva, and Günther Schreder. “Isotype Visualizations. A Chance for Participation & Civic Education”. JeDEM - eJournal of eDemocracy and Open Government 6, no. 2 (December 2, 2014): 136–150. Accessed December 4, 2024. https://jedem.org/index.php/jedem/article/view/301.