TY - JOUR A1 - Xie, S. A1 - Liu, Z. A1 - Chen, T. A1 - Hua, L. T1 - Spatiotemporal variations of ambient PM10 source contributions in Beijing in 2004 using positive matrix factorization JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 8 IS - 1 SP - 569 EP - 599 Y1 - 2008/01/11 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/8/569/2008/ L1 - http://www.atmos-chem-phys-discuss.net/8/569/2008/acpd-8-569-2008.pdf DO - 10.5194/acpd-8-569-2008 ER -