TY - JOUR A1 - Yao, X. A1 - Lau, N. T. A1 - Fang, M. A1 - Chan, C. K. T1 - On the time-averaging of ultrafine particle number size spectra in vehicular plumes JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 6 IS - 4 SP - 6825 EP - 6839 Y1 - 2006/07/24 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/6/6825/2006/ L1 - http://www.atmos-chem-phys-discuss.net/6/6825/2006/acpd-6-6825-2006.pdf DO - 10.5194/acpd-6-6825-2006 ER -