@misc{coin-kivi-2008a,
  author = {Antero Kivi},
  year = {2008},
  title = {Mobile Data Service Usage Measurements - Results 2005-2007},
  note = {project report},
  url = {http://www.netlab.tkk.fi/~jakivi/publications/Kivi_Mobile_Data_Service_Usage_2005_2007.pdf},
}