Makriyannis, Elpida, and Anna DeLiddo. “‘Fairy Rings” of Participation: The "invisible’ Network Influencing Participation in Online Communities”. Proceedings of the International Conference on Networked Learning 7 (May 3, 2010): 285–292. Accessed November 5, 2024. https://journals.aau.dk/index.php/nlc/article/view/9192.