@article{FriedrichGrunewaldKlinnertetal.1996,
  author    = {Friedrich, Alwin and Grunewald, Karsten and Klinnert, Silke and Bechmann, Wolfgang},
  title     = {Thermogravimetric and differential thermal analytical investigations on sewage farm soil},
  year      = {1996},
  language  = {en}
}
@article{GroteKlinnertBechmann2000,
  author    = {Grote, Matthias and Klinnert, Silke and Bechmann, Wolfgang},
  title     = {Comparison of degradation state and stability of different humic acids by means of chemolysis with tetramethylammonium hydroxide (TMAH)},
  year      = {2000},
  language  = {en}
}