1. Amberg, M., Giraud, F., Lemaire-Semail, B., Olivo, P., Casiez, G., and Roussel, N. Stimtac, a tactile input device with programmable friction. In Proc. of UIST '11, 7--8. ACM, 2011.
2. Douglas Atkinson, Pawel Orzechowski, Bruna Petreca, Nadia Bianchi-Berthouze, Penelope Watkins, Sharon Baurley, Stefano Padilla, and Mike Chantler. 2013. Tactile perceptions of digital textiles: a design research approach. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13). ACM, New York, NY, USA, 1669--1678.
3. Olivier Bau, Ivan Poupyrev, Ali Israr, and Chris Harrison. 2010. TeslaTouch: electrovibration for touch surfaces. In Proceedings of the 23nd annual ACM symposium on User interface software and technology (UIST '10). ACM, New York, NY, USA, 283--292.
4. Konrad Baumann. 2001. User Interface Design of Electronic Appliances. CRC Press.
5. Edgar Berdahl and Alexandras Kontogeorgakopoulos. 2013. The FireFader: Simple, open-source, and reconfigurable haptic force feedback for musicians. The Computer Music Journal 37, 1: 23--34.