@unpublished{BoeckmannBieleNeuberetal.2007,
  author  = {Christine B{\"o}ckmann and Jens Biele and Roland Neuber and Jenny Niebsch},
  title   = {Retrieval of multimodal aerosol size distribution by inversion of multiwavelength data},
  institution = {Institut f{\"u}r Mathematik},
  series    = {NLD Preprints},
  number    = {38},
  year    = {2007},
}