Hendrik Drachsler Dries Pecceu Tanja Arts Edwin Hutten Lloyd Rutledge Peter van Rosmalen Hans G. K. Hummel Rob Koper ReMashed - Recommendations for Mash-Up Personal Learning Environments. 788-793 2009 EC-TEL http://dx.doi.org/10.1007/978-3-642-04636-0_85 conf/ectel/2009 db/conf/ectel/ectel2009.html#DrachslerPAHRRHK09