@inproceedings{weko_158426_1,
   author	 = "Yuuki,Hirai and Atsuo,Hazeyama",
   title	 = "Development and Application of Concerto II: Question-posing Based Collaborative Learning Support System",
   booktitle	 = "Proceedings of The fourth International Conference on Collaboration Technologies",
   year 	 = "2008",
   volume	 = "2008",
   number	 = "",
   pages	 = "78--83",
   month	 = "aug"
}