HOLTHAM, Clive; RICH, Martin. Developing the architecture of a large-scale informal e-learning network. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 3, p. pp. 7–11, 2008. DOI: 10.3991/ijet.v3i0.556. Disponível em: https://online-journals.org/index.php/i-jet/article/view/556. Acesso em: 4 may. 2024.