Evaluating the Effectiveness of Personalised Recommender Systems in Learning Networks. - Hendrik Drachsler; Hans G. K. Hummel; Bert van den Berg; Jannes Eshuis; Wim Waterink; Rob Nadolski; Adriana J. Berlanga; Nanda Boers; Rob Koper (Learning Network Services for Professional Development, 2009)

Effects of the ISIS Recommender System for Navigation Support in self-organised Learning Networks. - Hendrik Drachsler; Hans G. K. Hummel; Bert van den Berg; Jannes Eshuis; Wim Waterink; Rob Nadolski; Adriana J. Berlanga; Nanda Boers; Rob Koper (J. Educ. Technol. Soc., 2009)