Han, Lijian, Zhou, Weiqi, Pickett, Steward T.A., Li, Weifeng, and Li, Li. An optimum city size? The scaling relationship for urban population and fine particulate (PM 2.5 ) concentration. Retrieved from https://par.nsf.gov/biblio/10054795. Environmental Pollution 208.PA Web. doi:10.1016/j.envpol.2015.08.039.

Han, Lijian, Zhou, Weiqi, Pickett, Steward T.A., Li, Weifeng, & Li, Li. An optimum city size? The scaling relationship for urban population and fine particulate (PM 2.5 ) concentration. Environmental Pollution, 208 (PA). Retrieved from https://par.nsf.gov/biblio/10054795. https://doi.org/10.1016/j.envpol.2015.08.039

Han, Lijian, Zhou, Weiqi, Pickett, Steward T.A., Li, Weifeng, and Li, Li. "An optimum city size? The scaling relationship for urban population and fine particulate (PM 2.5 ) concentration". Environmental Pollution 208 (PA). Country unknown/Code not available. https://doi.org/10.1016/j.envpol.2015.08.039. https://par.nsf.gov/biblio/10054795.

@article{osti_10054795,
place = {Country unknown/Code not available}, title = {An optimum city size? The scaling relationship for urban population and fine particulate (PM 2.5 ) concentration}, url = {https://par.nsf.gov/biblio/10054795}, DOI = {10.1016/j.envpol.2015.08.039}, abstractNote = {}, journal = {Environmental Pollution}, volume = {208}, number = {PA}, author = {Han, Lijian and Zhou, Weiqi and Pickett, Steward T.A. and Li, Weifeng and Li, Li}, }