@article{KumkeZwienerAbbtBraunetal.2000,
  author    = {Kumke, Michael Uwe and Zwiener, Christian and Abbt-Braun, Gudrun and Frimmel, Fritz Hartmann},
  title     = {Spectroscopic characterization of fulvic acid fractions of a contaminated groundwater},
  year      = {2000},
  language  = {en}
}
@article{KumkeOhlenbuschFrimmel2000,
  author    = {Kumke, Michael Uwe and Ohlenbusch, G. and Frimmel, Fritz Hartmann},
  title     = {Sorption of phenols to dissolved organic matter investigaded by solid phase micriextrakrion},
  year      = {2000},
  language  = {en}
}
@article{KumkeSpechtFrimmel2000,
  author    = {Kumke, Michael Uwe and Specht, C. H. and Frimmel, Fritz Hartmann},
  title     = {Characterization of NOM adsorption to clay minerals by sizs exclusion chromatography},
  year      = {2000},
  language  = {en}
}