ZHAO, Ji-chun; LIU, Shi-hong; ZHANG, Jun-feng. Rural Online Distance Education based on Content Delivery Network in Beijing. International Journal of Online and Biomedical Engineering (iJOE), [S. l.], v. 11, n. 7, p. pp. 29–32, 2015. DOI: 10.3991/ijoe.v11i7.4763. Disponível em: https://online-journals.org/index.php/i-joe/article/view/4763. Acesso em: 27 apr. 2024.