7Hao Jiming, He Dongquan, Wu Ye et al. , A Study of the Emission and Concentration Distribution of Vehicular Pollutants in the Urban Area of Beijing [J] . Atmospheric Environment, 2000, 34 (3) : 453-465.
8Colls J J, Micallef A, Measured and Modeled Concentrations and Vertical Profiles of Airborne Particulate Matter within the Boundary Layer of a Street Canyon [ J ] . The Science of the Total Environment, 1999, 235:221-233.
