@article{ca-otmt-03,
  author = {Robert C. Chalmers and Kevin C. Almeroth},
  title = {On the topology of multicast trees},
  journal = {IEEE/ACM Trans. Netw.},
  volume = {11},
  number = {1},
  year = {2003},
  issn = {1063-6692},
  pages = {153--165},
  doi = {http://dx.doi.org/10.1109/TNET.2002.804835},
  publisher = {IEEE Press},
  address = {Piscataway, NJ, USA}
}