@book{HoppeKerresKoehler2011,
  author    = {Ulrich H. Hoppe and Michael Kerres and Thomas K{\"o}hler},
  title     = {DeLFI 2011},
  editor    = {Steffen Friedrich and Andrea Kienle and Holger Rohland},
  publisher = {TUDpress Verlag der Wissenschaften},
  address   = {Dresden},
  isbn      = {978-3-942710-36-7},
  year      = {2011},
  language  = {und}
}