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. J1 - ACP VL - 6 IS - 12 SP - 4591 EP - 4600 Y1 - 2006/10/12 PB - Copernicus Publications SN - 1680-7316 UR - http://www.atmos-chem-phys.net/6/4591/2006/ L1 - http://www.atmos-chem-phys.net/6/4591/2006/acp-6-4591-2006.pdf ER -