1. R. Jenkins: InX-Ray Spectrometry, ed., by H.K. Herglotz and L.S. Birks (Dekker, New York 1978) Chap. 10
2. J.I. Goldstein, H. Yakovitz (eds.):Practically Scanning Electron Microscopy, 3rd edn. (Plenum, New York 1977)
3. K.R. Akselsson, S.A.E. Johansson: IEEE Trans. NS-26, 1358 (1979)
4. J.V. Gilfrich, E.F. Skelton, S.B. Quadri, J.P. Kirkland, D.J. Nagel: Anal. Chem.55, 187 (1983)
5. A.B. Hallak, N.S. Saleh: Dirasat9, 39 (1982)