W. Kessler, R. Klinger, and J. Kuhn. 6th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (WASSA 2015), page 51-57. Red Hook, NY, Curran, (2015)
M. Wieland, H. Schwarz, U. Breitenbücher, and F. Leymann. Proceedings of the 13th Annual IEEE Intl. Conference on Pervasive Computing and Communications Workshops: 11th Workshop on Context and Activity Modeling and Recognition, page 32-37. St. Louis, Missouri, IEEE, (2015)
D. Weber, A. Shirazi, and N. Henze. Proceedings of the 17th ACM International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct, page 1117-1122. New York, NY, ACM, (2015)