Bang-Jensen91'

@article{DBLP:journals/jct/Bang-Jensen91,
  author    = {J{\o}rgen Bang-Jensen},
  title     = {Edge-disjoint in- and out-branchings in tournaments and
               related path problems},
  journal   = {J. Comb. Theory, Ser. B},
  volume    = {51},
  number    = {1},
  year      = {1991},
  pages     = {1-23},
  ee        = {http://dx.doi.org/10.1016/0095-8956(91)90002-2},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}