@unpublished{FreedenGlocknerLitzenberger1999,
  author  = {Willi Freeden and Oliver Glockner and Rolf Litzenberger},
  title   = {A General Hilbert Space Approach to Wavelets and Its Application in Geopotential Determination},
  institution = {Fachbereich Mathematik},
  series    = {Berichte der Arbeitsgruppe Technomathematik (AGTM Report)},
  number    = {207},
  year    = {1999},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-6151},
}