@unpublished{BurgoldFrenzelRolfes2013,
  author    = {Burgold, Julia and Frenzel, Fabian and Rolfes, Manfred},
  title     = {Observations on slums and their touristification},
  series = {Die Erde : journal of the Geographical Society of Berlin ; Zeitschrift der Gesellschaft f{\"u}r Erdkunde zu Berlin},
  volume    = {144},
  journal   = {Die Erde : journal of the Geographical Society of Berlin ; Zeitschrift der Gesellschaft f{\"u}r Erdkunde zu Berlin},
  number    = {2},
  publisher = {Gesellschaft f{\"u}r Erdkunde},
  address   = {Berlin},
  issn      = {0013-9998},
  pages     = {CP2 -- 104},
  year      = {2013},
  language  = {en}
}