@article{Liu15IFCQE,
  author    = {Ge Gao and Yu-Shen Liu and Meng Wang and Ming Gu and Jun-Hai Yong},
  title     = {{A query expansion method for retrieving online BIM resources based on Industry Foundation Classes}},
  journal   = {Automation in Construction},
  volume    = {56},
  number    = {},
  pages     = {14--25},
  year      = {2015},
}