"Eiichi Sasaki,Takashi Ueda,Kouichi Takeya,Hiroshi Yamaguchi","Vibration sensors using power generation with electret for bridge monitoring",,"Sensors and Materials",,"Vol. 29","No. 2","pp. 187-204",2017,May "Eiichi Sasaki,Takashi Ueda,Koichi Takeya,Hiroshi Yamaguchi","Vibration Sensors Using Power Generation with Electret for Bridge Monitoring",,"Sensors and Materials",,"Vol. 29","No. 2","pp. 187-204",2017,Feb.