1. Osterwalder, A., Pigneur, Y., Bernarda, G., Smith, A.: Value Proposition Design: How to Create Products and Services Customers Want. Wiley, London (2014)
2. Friedman, B., Kahn, P., Borning, A.: Value sensitive design: theory and methods. University of Washington Technical report, pp. 02–12 (2002)
3. Leong, T.W., Iversen, O.S.: Values-led participatory design as a pursuit of meaningful alternatives. In: Proceedings of the Annual Meeting of the Australian Special Interest Group for Computer Human Interaction, New York, NY, USA, pp. 314–323 (2015)
4. Iversen, O.S., Leong, T.W.: Values-led participatory design: mediating the emergence of values. In: Proceedings of the 7th Nordic Conference on Human-Computer Interaction: Making Sense Through Design, New York, NY, USA, pp. 468–477 (2012)
5. User experience evaluation. Wikipedia.
https://en.wikipedia.org/wiki/User_experience_evaluation