Schöning, J., Steinicke F., Krüger A., Hinrichs K., & Valkov D. (2009). Human-Computer Interaction – INTERACT 2009: 12th IFIP TC 13 International Conference, Uppsala, Sweden, August 24-28, 2009, Proceedings, Part II. (Gross, T., Gulliksen J., Kotzé P., Oestreicher L., Palanque P., Prates R. Oliveira, et al., Ed.). 40–53.
