1. H. K. Tönshoff and I. Inasaki, “Sensors in manufacturing,” Sensors Applications, Weinheim, Wiley-VCH Verlag GmbH, vol. 1, 2001.
2. BCC Research Report, “Global markets and technologies for sensors - focus on pressure sensors,” BCC Publishing, Code - IAS067A, April 2013.
3. A. Zaslavsky, C. Perera, and D. Georgakopoulos, “Sensing as a service and big data,” Proceedings of the International Conference on Advances in Cloud Computing (ACC), Bangalore, India, July, 2012.
4. M. Koguchi, and S. Naganuma, “Triple action pressure switch,” U.S. Patent No. 6,525,286 B2, February 2003.
5. H. Tanaka, H. Suzuki, and K. Sasaki, “Triple action pressure switch apparatus,” U.S. Patent No. 4,853,504. August 1989.