1. The accelerator system MAX
2. C.N.K. Siegbahn, A. Fahlman, R. Nordberg, K. Hamrin, J. Hedman, G. Johansson, T. Bergmark, S.-E. Karlsson, I. Lindgren, B. Lindberg, ESCA, Atomic, Molecular and Solid State Structure Studied by Means of Electron Spectroscopy, Almqvist and Wiksells, Uppsala, 1967.
3. ESCA Applied to Free Molecules;Siegbahn,1969
4. 50 years anniversary of the discovery of the core level chemical shifts. The early years of photoelectron spectroscopy