?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M.R.&rft.aulast=Ahmad&rft.au=Ahmad%2C+M.R.&rft.issue=SPL+12&rft.atitle=Trapezoidal+electrodes+array+for+electret-based+electrostatic+energy+harvester&rft.pages=186-198&rft.volume=17&rft.title=Sensors+and+Transducers&rft.issn=17265479&rft.date=2012&rft.genre=article