Koper, Rob and Pannekeet, Kees and van Rosmalen, Peter and Sloep, Peter and Kester, Liesbeth and de Vries, Fred (2005) Identification of critical time‐consuming student support activities in e‐learning. Association for Learning Technology Journal, 13 (3). pp. 219-229. ISSN 0968-7769

Koper, Rob and Pannekeet, Kees and Hendriks, Maaike and Hummel, Hans (2004) Building communities for the exchange of learning objects: theoretical foundations and requirements. Association for Learning Technology Journal, 12 (1). pp. 21-35. ISSN 0968-7769 (print)/1741-1629 (online)