Hironori Kakuta and Kajiro Watanabe and Yosuke Kurihara, Development of Vibration Sensor with Wide Frequency Range Based on Condenser Microphone -Estimation System for Flow Rate in Water Pipes-. journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. October 2012, vol. 70(10). 2267 - 2272 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/8417.