@techreport{cost257td9926,
  author = {E. Nyberg and J. Virtamo and S. Aalto},
  title = {An exact algorithm for calculating blocking probabilities in multicast networks},
  institution = {COST257},
  number = {TD(99)26},
  month = {Sep.},
  year = {1999},
  url = {http://www.netlab.hut.fi/tutkimus/cost257/publ/net_2000.pdf},
}