Erschienen in: DILL, John, ed., Rae EARNSHAW, ed., David KASIK, ed., John VINCE, ed., Pak Chung WONG, ed.. Expanding the Frontiers of Visual Analytics and Visualization. London: Springer London, 2012, pp. 45-67. ISBN 978-1-4471-2803-8. Available under: doi: 10.1007/978-1-4471-2804-5_4
