1. Composition and sources of aerosols from the Amazon Basin;Artaxo;J. Geophys. Res.,1988
2. The microanalysis of individual atmospheric aerosol particles by electron, proton and laser microprobe;Artaxo,1990
3. PIXE - A Novel Technique for Elemental Analysis;Johansson,1988
4. Physical and chemical characterization of individual particles;Traxel,1986