1. Special report: Cutting the cord - wireless energy makes wireless devices look easy. The Economist, Technical Report, April 2007
2. T.W. Haesch, 100 Produkte der Zukunft (Econ Verlag, Berlin, 2007)
3. H. Brody, 10 emerging technologies that will change the world. Technology Review, Technical Report, February 2003 Issue of Technology Review, 2003. [Online]
http://www.technologyreview.com/Infotech/13060/?a=f
4. J. Rodriguez-Rodriguez, M. Delgado-Restituto, J. Masuch, A. Rodriguez-Perez, F. Alarcon, A. Rodriguez-Vazquez, An ultralow-power mixed-signal back end for passive sensor uhf rfid transponders. IEEE Trans. Ind. Electron. 59(2), 1310–1322 (2012)
5. P. Schopp, L. Klingbeil, C. Peters, Y. Manoli, Design, geometry evaluation, calibration of a gyroscope-free inertial measurement unit. Sensors Actuators A Phys. 162(2), 379–387 (2010)