1. Giorio, C., Fascinari, M.: Kinect in Motion - Audio and Visual Tracking by Example. Packt Publishing, Birmingham (2013)
2. Nowosielski, A.: Evaluation of touchless typing techniques with hand movement. In: Burduk, R., et al. (eds.) Proceedings of the 9th International Conference on Computer Recognition Systems, CORES 2015. AISC, vol. 403, pp. 441–449. Springer, Cham (2016)
3. Nowosielski, A.: 3-steps keyboard: reduced interaction interface for touchless typing with head movements. In: Kurzynski, M., Wozniak, M., Burduk, R (eds.) Proceedings of the 10th International Conference on Computer Recognition Systems, CORES 2017. AISC, vol. 578, pp. 229–237. Springer, Cham (2018)
4. Mantiuk, R., Kowalik, M., Nowosielski, A., Bazyluk, B.: Do-it-yourself eye tracker: low-cost pupil-based eye tracker for computer graphics applications. In: LNCS, vol. 7131, pp. 115–125 (2012)
5. Pupil Labs GmbH: Eye tracking for virtual and augmented reality.
https://pupil-labs.com/vr-ar/
. Accessed 15 June 2019