RestivoS03'

BibTeX

@article{DBLP:journals/dam/RestivoS03,
  author    = {Antonio Restivo and
               Pedro V. Silva},
  title     = {Periodicity vectors for labelled trees},
  journal   = {Discrete Applied Mathematics},
  volume    = {126},
  number    = {2-3},
  year      = {2003},
  pages     = {241-260},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}