@ARTICLE {
	AUTHOR = "Valeria Herskovic and Sergio Ochoa and Jos{\'e} A. Pino and Andres Neyem",
	TITLE ="The Iceberg Effect: Behind the User Interface of Mobile Collaborative Systems",
	JOURNAL = "Journal of Universal Computer Science",
	VOLUME = "17",
	NUMBER = "2",
	PAGES = "183-202",
	YEAR = "2011",
	PUBLISHER = "Graz University of Technology",
	ADDRESS = "Graz, Austria",
	ISSN = "0948-695X"
	}