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2. Swietlicki, E. European Source Region Identification of Long Range Transported Ambient Aerosol Based on PIXE Analysis and Related Techniques; Ph.D. Dissertation; Department of Nuclear Physics, Lund University: Lund, Sweden, 1989.
3. Johansson, S.A.E.; Campbell, J.L. PIXE: a Novel Technique for Elemental Analysis, 1st ed.; Wiley: Chichester, U.K., 1988; Chapters 1–4 and Chapter 12, Section 3.
4. Air Investigations-Emissions to Air-Determination of Concentrations and Mass-Flow; Luftundersökningar-Utsläpp Till Luft-Bestämning av Koncentration Och Mass-Flöde Stoft i Gaskanaler-Manuell Gravimetrisk Metod. Report SS028426-1. The Swedish Standardisation Commission: Stockholm, Sweden, 1991.
5. Stationary Source Emissions—Determination of Mass Concentration of Polycyclic Aromatic Hydrocarbons. ISO 11338. International Organization for Standardization: Geneva, Switzerland, 2003.