@InProceedings{b235,
	author = 	{B. Simon and S. Retalis and S. Brantner},
	title = 	{Building Interoperability among Learning Content Management Systems},
	year = 	{2003},
	month = 	{May},
	html = 	{http://www.wu-wien.ac.at/usr/wi/bsimon/publikationen/p107-simon.html},
	category = 	{NM, education},
	booktitle = 	{Proceedings of the 12th World Wide Web Conference},
}