@inproceedings{weko_158429_1,
   author	 = "Toshihiro,Hayashi and Takanori,Mizuno and Hiroyuki,Tominaga and Hiroyuki,Tarumi and Toshinori,Yamasaki",
   title	 = "A Learner-centered e-Learning Environment by Contributing and Sharing Problems Created by Learners",
   booktitle	 = "Proceedings of The fourth International Conference on Collaboration Technologies",
   year 	 = "2008",
   volume	 = "2008",
   number	 = "",
   pages	 = "94--98",
   month	 = "aug"
}