Paul de Vrieze Patrick van Bommel Theo P. van der Weide J. Klok Adaptation in Multimedia Systems. 333-343 2005 25 Multimedia Tools Appl. 3 http://springerlink.metapress.com/index/10.1007/s11042-005-6538-3 db/journals/mta/mta25.html#VriezeBWK05