@article{Dittler,
  author    = {Ullrich Dittler},
  title     = {Dittlers Fotoworkshop: Kometenfotografie – Equipement und Vorbereitungen},
  series = {Abenteuer Astronomie},
  number    = {12},
  issn      = {2366-3944},
  pages     = {54 -- 56},
  language  = {de}
}