de Vries FJ, Kester L, Sloep P, van Rosmalen P, Pannekeet K, Koper R. Identification of critical timeconsuming student support activities in e-learning. Research in Learning Technology [Internet]. 2005Oct.1 [cited 2024Apr.25];13(3). Available from: https://journal.alt.ac.uk/index.php/rlt/article/view/1031