Hammond, Tony, Hannay, Timo, Lund, Ben and Scott, Joanna. "Social Bookmarking Tools (I): A General Review." D-Lib Magazine 11 , no. 4 (2005): .

Lund, Ben, Hammond, Tony, Flack, Martin and Hannay, Timo. "Social Bookmarking Tools (II): A Case Study - Connotea." D-Lib Magazine 11 , no. 4 (2005): .

Tane, Julien, Schmitz, Christoph, Stumme, Gerd, Staab, Steffen and Studer, R.. "The Courseware Watchdog: an Ontology-based tool for finding and organizing
learning material." Paper presented at the meeting of the Mobiles Lernen und Forschen - Beiträge der Fachtagung an der Universität, 2003.