Paula Kotzé, Gary Marsden, Gitte Lindgaard, Janet Wesson, Marco Winckler: Human-Computer Interaction - INTERACT 2013 - 14th IFIP TC 13 International Conference, Cape Town, South Africa, September 2-6, 2013, Proceedings, Part I. Lecture Notes in Computer Science 8117, Springer 2013, ISBN 978-3-642-40482-5