@article{Liu13ifc,
  author    = {Ya-Hong Lin and Yu-Shen Liu and Ge Gao and Xiao-Guang Han and Cheng-Yuan Lai and Ming Gu},
  title     = {{The IFC-based path planning for 3D indoor spaces}},
  journal   = {Advanced Engineering Informatics},
  volume    = {27},
  number    = {2},
  pages     = {189--205},
  year      = {2013},
}