Kazunari Meguro and Shinichi Motomura and Takao Kawamura and Kazunori Sugahara, On the Continuous Service of Distributed e-Learning System. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. July 2009, vol. 31(7). 1736 - 1740 [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/1935.