TY - JOUR A1 - Voigt, Christian A1 - Swatman, Paula T1 - Contextual e-learning evaluation: A preliminary framework JF - Journal of Educational Media Y1 - 2004 U6 - https://doi.org/10.1080/1358165042000283057 SN - 1469-9443 VL - 29 IS - 3 SP - 175 EP - 187 PB - Taylor & Francis ER - TY - CHAP A1 - Voigt, Christian A1 - Swatman, Paula T1 - Online Case Discussions: Tensions in Activity Systems T2 - Sixth IEEE International Conference on Advanced Learning Technologies (ICALT'06), 05-07 July 2006, Kerkrade, The Netherlands Y1 - 2006 SN - 0-7695-2632-2 U6 - https://doi.org/10.1109/icalt.2006.1652550 SP - 748 EP - 750 PB - IEEE ER -