1. Duan, H., Olivetti, E., Kirchain, R.  Carbon footprint of lighting products by use of streamlined Life Cycle Assessment. IEEE-ISSST 2012. Boston, USA. May 15-17, 2012.

2. Zhengdao Li, Xifu Wang, Pengpeng Li. 2012. "The Conceptual Model of the Design for Construction Waste Minimization Based on System Dynamics." Proceedings of the 17th International Symposium on Advancement of Construction Management and Real Estate, Springer Berlin Heidelberg, pp: 1071-1078. (Index to Scientific & Technical Proceedings (ISTP))

3. Shichao Ma, Zhengdao Li. 2012. "A Multi-level Grey-Based Approach to Evaluating the Indicators for Sustainable Housing Development." Proceedings of the 17th International Symposium on Advancement of Construction Management and Real Estate, Springer Berlin Heidelberg, pp: 131-139. (Index to Scientific & Technical Proceedings (ISTP))

4. Zhengdao Li, Xifu Wang, Pengpeng Li. The Conceptual Model of the Design for Construction Waste Minimization Based on System Dynamics.17th International Symposium on Advancement of Construction Management & Real Estate. 1071-1078(2012).