1. Admoni, H., Dragan, A., Srinivasa, S.S., Scassellati, B.: Deliberate delays during robot-to-human handovers improve compliance with gaze communication. In: Proceedings of the 2014 ACM/IEEE International Conference on Human-robot Interaction, HRI 2014, pp. 49–56. ACM, New York (2014).
http://doi.acm.org/10.1145/2559636.2559682
2. Andrist, S., Gleicher, M., Mutlu, B.: Looking coordinated: Bidirectional gaze mechanisms for collaborative interaction with virtual characters. In: Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems, CHI 2017, pp. 2571–2582. ACM, New York (2017).
http://doi.acm.org/10.1145/3025453.3026033
3. Bassetti, C.: Chapter 2 - social interaction in temporary gatherings: A sociological taxonomy of groups and crowds for computer vision practitioners. In: Murino, V., Cristani, M., Shah, S., Savarese, S. (eds.) Group and Crowd Behavior for Computer Vision, pp. 15–28. Academic Press (2017).
https://doi.org/10.1016/B978-0-12-809276-7.00003-5
,
http://www.sciencedirect.com/science/article/pii/B9780128092767000035
4. Biagini, F., Campanino, M.: Discrete time Markov chains. In: Elements of Probability and Statistics, pp. 81–87. Springer, Cham (2016).
https://doi.org/10.1007/978-3-319-07254-8_6
5. Domhof, J., Chandarr, A., Rudinac, M., Jonker, P.: Multimodal joint visual attention model for natural human-robot interaction in domestic environments. In: 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), pp. 2406–2412, September 2015.
https://doi.org/10.1109/IROS.2015.7353703