@article{WegenerWirgesFohlmeisteretal.2004,
  author    = {Michael Wegener and Werner Wirges and Jens Bernd Fohlmeister and Brigitte Tiersch and Reimund Gerhard},
  title     = {Two-step inflation of cellular polypropylene films: Void-thickness increase and enhanced electromechanical properties},
  year      = {2004},
}