@book{HoppeKerresK{\"o}hler2011,
  author    = {Hoppe, Ulrich H. and Kerres, Michael and K{\"o}hler, Thomas},
  title     = {DeLFI 2011},
  editor    = {Friedrich, Steffen and Kienle, Andrea and Rohland, Holger},
  publisher = {TUDpress Verlag der Wissenschaften},
  address   = {Dresden},
  isbn      = {978-3-942710-36-7},
  year      = {2011},
  language  = {und}
}
@book{MeinckeLuckeTavangarian2011,
  author    = {Meincke, Friedrich and Lucke, Ulrike and Tavangarian, Djanshid},
  title     = {DeLFI 2011},
  editor    = {Rohland, Holger and Kienle, Andrea and Friedrich, Steffen},
  publisher = {Gesellschaft f{\"u}r Informatik},
  address   = {Bonn},
  isbn      = {978-3-88579-282-6},
  pages     = {266},
  year      = {2011},
  language  = {und}
}