@techreport{karpijoki00__secur_ad_hoc_networ,
  author = {Karpijoki, V.},
  title = {Security in Ad Hoc Networks},
  institution = {Helsinki University of Technology},
  year = {2000},
  note = {http://www.hut.fi/\~vkarpijo/netsec00/netsec00\_manet\_sec.ps}
}