@article{PfeifferSchubertWollenbergeretal.1996,
  author    = {Pfeiffer, Dorothea and Schubert, Frank and Wollenberger, Ursula and Scheller, Frieder W.},
  title     = {Electrochemical sensors : enzyme electrodes and field effect transistors},
  year      = {1996},
  language  = {en}
}
@article{SchellerSchubertFederowitz1997,
  author    = {Scheller, Frieder W. and Schubert, Frank and Federowitz, J.},
  title     = {Present state and frontiers in biosensorics},
  year      = {1997},
  language  = {en}
}