@inproceedings { dolog-04b,
	title = {Personalization in Distributed e-Learning Environments},
	journal = {Proc. of WWW2004 –- The Thirteen International World Wide Web Conference},
	year = {2004},
	month = {may},
	pages = {170-179},
	publisher = {ACM Press},
	organization = {ACM Press},
	address = {New Yourk},
	URL = {http://doi.acm.org/10.1145/1013367.1013395},
	author = {Peter Dolog and Nicola Henze and Wolfgang Nejdl and Michael Sintek}
}