Papageorgiou, Kyriaki, Lotta Hassi, Ramon Bragos, Guido Charosky, Luciana Leveratto, and Juan Ramos. “Prototyping the Future of Learning: Reflections After Seven Iterations of Challenge-Based Innovation (2014-2020)”. CERN IdeaSquare Journal of Experimental Innovation 5, no. 1 (June 30, 2021): 5–10. Accessed July 16, 2024. https://e-publishing.cern.ch/index.php/CIJ/article/view/1290.