@misc{ahraspen02b,
  author = {A. Penttinen and J. Virtamo},
  title = {Improving Multicast Tree Construction in Static Ad Hoc Networks},
  year = {2003},
  note = {Poster presented at WLN 2003 (size A1)},
  month = {Oct.},
  url = {http://www.netlab.hut.fi/tutkimus/ahras/publ/wlnposter.pdf},
}