M. Varela, T. Mäki, L. Skorin-Kapov, and T. Hoßfeld. Proceedings of the 4th international workshop on perceptual quality of systems (PQS 2013), Vienna, Austria, (2013)
K. Probst, M. Haller, K. Yasu, M. Sugimoto, and M. Inami. TEI'14: Proceedings of the 8th International Conference on Tangible, Embedded and Embodied Interaction, Munich, Germany, (February 2014)