1. Gemeente Amsterdam. 2021. Below the surface. https://belowthesurface.amsterdam/en/. [Online; accessed 15-April-2021].
2. Kathy Baxter, Catherine Courage, and Kelly Caine. 2015. Understanding Your Users: A Practical Guide to User Research Methods (2nd ed.). Morgan Kaufmann Publishers Inc., San Francisco, CA, USA.
3. Measuring the “Why” of Interaction
4. Victoria Clarke, Virginia Braun, and Nikki Hayfield. 2015. Thematic analysis. Qualit. psych.: A practical guide to research methods 222 (2015), 248.
5. Self determination-based design to achieve acceptance of assisted living technologies for older adults