1. X3D. Extensible 3D graphics for web authors;Brutzman,2007
2. COLLADA. Sailing the gulf of 3D digital content creation;Arnaud,2006
3. Core web3D;Walsh,2001
4. Li Y, He Z. 3D indoor navigation: a framework of combining BIM with 3D GIS. In: 44th ISOCARP congress. 2008.
5. Benner J, Geiger A, Leinemann K. Flexible generation of semantic 3D building models. In: Proceedings of the 1st international workshop on next generation 3D city models. 2005.