3 Peter Dolog Nicola Henze Wolfgang Nejdl Michael Sintek 2004 The Personal Reader: Personalizing and Enriching Learning Resource using Semantic Web Technologies Wolfgang Nejdl and Paul De Bra LNCS Einghoven, The Netherlands Springer 3137 85-94 aug http://www.springerlink.com/content/99lvn8fq5g96xlb3/