Maia Zaharieva Wolfgang Klas MobiLearn: An Open Approach for Structuring Content for Mobile Learning Environments. 114-124 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3307&spage=114 2004 conf/wise/2004-w WISE Workshops db/conf/wise/wise2004-w.html#ZaharievaK04