@article{Liu12ifc, 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}, }