@phdthesis{Schumacher2000,
  author    = {Schumacher, Rolf},
  title     = {Bestimmung von optischen Eigenschaften troposph{\"a}rischer Aerosole in der Arktis},
  pages     = {145 S.},
  year      = {2000},
  language  = {de}
}
@phdthesis{Schumacher2001,
  author    = {Schumacher, Rolf},
  title     = {Messung von optischen Eigenschaften troposph{\"a}rischer Aerosole in der Arktis = Measurement of optical properties for tropospheric aerosols in the Artic},
  series = {Berichte zur Polar- und Meeresforschung},
  volume    = {386},
  journal   = {Berichte zur Polar- und Meeresforschung},
  publisher = {Alfred-Wegener-Inst. f{\"u}r Polar- und Meeresforschung},
  address   = {Bremerhaven},
  issn      = {0176-5027},
  pages     = {VIII, 153 S. : Ill., graph. Darst., Kt.},
  year      = {2001},
  language  = {de}
}