P. van de Ven, R. Feld, A. Bourke, J. Nelson and G. O. Laighin, “An Integrated Fall and Mobility Sensor and Wireless Health Signs Monitoring System,” Proceedings of IEEE Sensors, Lecce, 26-29 October 2008, pp. 625- 628.
 S. G. Taylor, K. M. Farinholt, E. B. Flynn, E. Figueiredo, D. L. Mascarenas, E. A. Moro, G. Park, M. D. Todd and C. R. Farrar, “A Mobile-Agent-Based Wireless Sensing Network for Structural Monitoring Applications,” Measurement Science & Technology, Vol. 20, No. 4, 2009, pp. 1-14. http://dx.doi.org/10.1088/0957-0233/20/4/045201
 J. Hayes, S. Beirne, K.-T. Lau and D. Diamond, “Evaluation of a Low Cost Wireless Chemical Sensor Network for Environmental Monitoring,” Proceedings of IEEE Sensors, Lecce, 26-29 October 2008, pp. 530-538.
 T. Itoh, Y. Zhang, M. Matsumoto and T. Maeda, “Wireless Sensor Network for Power Consumption Reduction in Information and Communication Systems,” Proceedings of IEEE Sensors, Christchurch, 25-28 October 2009, pp. 572-575.
 H. Okada and T. Itoh, “Battery-Less Wireless Current Sensor Node Utilizing the Dependence of Charging Time of a Capacitor on the Current Flowing through a Power Line,” IEICE Electronics Express, Vol. 10, No. 12, 2013.
 J. D. Cockcroft and E. T. S. Walton, “Experiments with High Velocity Positive Ions. (I) Further Developments in the Method of Obtaining High Velocity Positive Ions,” Proceedings of the Royal Society A, Vol. 136, 1932, pp. 619-630. http://dx.doi.org/10.1098/rspa.1932.0107