Gesture Formalization for Multitouch

@article{Kammer2015GestureFF,
  title={Gesture Formalization for Multitouch},
  author={Dietrich Kammer and Dana Henkens and C. Henzen and Rainer Groh},
  journal={Softw., Pract. Exper.},
  year={2015},
  volume={45},
  pages={527-548}
}