@article{FuchssStieglitzHillmann2008,
  author    = {Fuchß, Christoph and Stieglitz, Stefan and Hillmann, Oliver},
  title     = {Ad-hoc messaging network in a mobile environment},
  year      = {2008},
  language  = {en}
}
@article{StieglitzFuchssHillmannetal.2007,
  author    = {Stieglitz, Stefan and Fuchß, Christoph and Hillmann, Oliver and Lattemann, Christoph},
  title     = {Mobile learning by using Ad Hoc Messaging Network},
  year      = {2007},
  language  = {en}
}