1. Guide to the Expression of Uncertainty in Measurement, International Organization for Standardization, Geneva, Switzerland, 1995, ISBN 92-67-10188-9
2. S.A.E. Johansson, J.L. Campbell, PIXE: A Novel Technique for Elemental Analysis, Wiley, New York, 1988, ISBN 0-471-92011-8
3. Uncertainties in thick-target PIXE analysis
4. F. Munnik, K.A. Sjöland, U. Wätjen, Nucl. Instr. and Meth. 161–163 (2000) 348
5. K.A. Sjöland, F. Munnik, U. Wätjen, Nucl. Instr. and Meth. 161–163 (2000) 264