@article{DBLP:journals/pr/LuZF07,
  author    = {Sijun Lu and
               Jian Zhang and
               David Dagan Feng},
  title     = {Detecting unattended packages through human activity recognition
               and object association},
  journal   = {Pattern Recognition},
  volume    = {40},
  number    = {8},
  year      = {2007},
  pages     = {2173-2184},
  ee        = {http://dx.doi.org/10.1016/j.patcog.2006.12.013},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}