@article{WollenbergerNeumannRiedeletal.1994,
  author    = {Wollenberger, Ursula and Neumann, B. and Riedel, K. and Scheller, Frieder W.},
  title     = {Enzyme and microbial sensors for phosphate, phenols, pesticides and peroxides},
  year      = {1994},
  language  = {en}
}
@article{SchellerBierNeumann1994,
  author    = {Scheller, Frieder W. and Bier, Frank Fabian and Neumann, B.},
  title     = {Bioindikation in aquatischen {\"O}kosystemen : Bioindikation in limnischen und k{\"u}stennahen {\"O}kosystemen ; Grundlagen, Verfahren und Methoden},
  publisher = {Fischer},
  address   = {Jena},
  pages     = {S. 380 - 386},
  year      = {1994},
  language  = {de}
}