P Fang, X Ma, X Li, X Qiu, R Gerhard, X Zhang, G Li
"Fabrication, structure characterization, and performance testing of piezoelectret-film sensors for recording body motion"
IEEE Sensors Journal 18 (1) (2018), pp. 401-412, DOI: 10.1109/JSEN.2017.2766663
Gunnar Gidion and Reimund Gerhard
"The Bow on a String: Bow Vibrations Detected with Ferroelectret Sensors"
Acta Acustica united with Acustica, Volume 104, Number 2, March/April 2018, pp. 315-322, DOI: 10.3813/AAA.919174