@article{MellingerGonzalezGerhard2003,
  author    = {Mellinger, Axel and Gonzalez, Francisco Camacho and Gerhard, Reimund},
  title     = {Ultraviolet-induced discharge currents and reduction of piezoelectric coefficient in cellular polypropylene films},
  year      = {2003},
  language  = {en}
}
@article{GonzalezMellingerGerhardetal.2002,
  author    = {Gonzalez, Francisco Camacho and Mellinger, Axel and Gerhard, Reimund and Santos, Lucas F. and Faria, Roberto M.},
  title     = {Photo-stimulated discharge of highly insulating polymers (PTFE and PETP)},
  isbn      = {0-7803-7502-5},
  year      = {2002},
  language  = {en}
}
@article{MellingerGonzalezGerhardetal.2002,
  author    = {Mellinger, Axel and Gonzalez, Francisco Camacho and Gerhard, Reimund and Santos, Lucas F. and Faria, Roberto M.},
  title     = {Phototstimulated discharge of corona and electron-beam charged electret polymers},
  isbn      = {0-7803-7560-2},
  year      = {2002},
  language  = {en}
}