D. Weber, A. Voit, P. Kratzer, and N. Henze. Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing, page 1259-1264. New York, NY, USA, ACM, (2016)
A. Voit, D. Weber, and N. Henze. Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, page 1263--1270. New York, NY, USA, ACM, (2018)