TY - JOUR A1 - Johnson, K. S. A1 - de Foy, B. A1 - Zuberi, B. A1 - Molina, L. T. A1 - Molina, M. J. A1 - Xie, Y. A1 - Laskin, A. A1 - Shutthanandan, V. T1 - Aerosol composition and source apportionment in the Mexico City Metropolitan Area with PIXE/PESA/STIM and multivariate analysis JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 6 IS - 3 SP - 3997 EP - 4022 Y1 - 2006/05/19 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/6/3997/2006/ L1 - http://www.atmos-chem-phys-discuss.net/6/3997/2006/acpd-6-3997-2006.pdf ER -