@techreport{ee-sota-2011,
  author = {Aleksi Penttinen},
  title = {Green Networking - A Literature Survey 2011},
  institution = {Department of Communications and Networking, Aalto ELEC},
  month = {Apr.},
  year = {2011},
  url = {http://www.netlab.tkk.fi/tutkimus/meen/greennetworking.pdf},
}