@article{DBLP:journals/cg/MajorMS89,
  author    = {F. Major and
               Jacques Malenfant and
               Neil F. Stewart},
  title     = {Distance between objects represented by octtrees defined
               in different coordinate systems},
  journal   = {Computers {\&} Graphics},
  volume    = {13},
  number    = {4},
  year      = {1989},
  pages     = {497-503},
  ee        = {http://dx.doi.org/10.1016/0097-8493(89)90011-3},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}