@incollection{Krisp2013,
  author    = {Jukka M. Krisp},
  title     = {Preface},
  booktitle = {Progress in Location-Based Services},
  editor    = {Jukka M. Krisp},
  isbn      = {9783642342028},
  doi       = {10.1007/978-3-642-34203-5},
  year      = {2013},
}