@unpublished{Spangenberg2013,
  author    = {Spangenberg, Bernd},
  title     = {Quantitative detection of drugs by densitometry and video-scanning},
  series    = {Thin-Layer Chromatography in Drug Analysis},
  editor    = {Sherma, Joseph and Komsta, Lukasz and Waksmundzka-Hajnos, Monika},
  doi       = {10.1201/b15637},
  institution = {Fakult{\"a}t Maschinenbau und Verfahrenstechnik (M+V)},
  year      = {2013},
  subject      = {Arzneimittel},
  language  = {en}
}