@article{guo2014an, title = {An integrated material metabolism model for stocks of urban road system in Beijing, China} author = {Guo, Zhen and Hu, Dan and Zhang, Fuhua and Huang, Guolong and Xiao, Qiang}, journal = {Science of The Total Environment}, url = {https://www.sciencedirect.com/science/article/pii/S0048969713011856}, doi = {10.1016/j.scitotenv.2013.10.041}, year = {2014} }