Vekemans, B.; Janssens, K.; Vincze, L.; Adams, F.; Van Espen, P. (1994). "Analysis of X-ray spectra by iterative least squares (AXIL): New developments". X-Ray Spectrometry. 23 (6): 278. doi:10.1002/xrs.1300230609.
Packwood, R. H.; Brown, J. D. (1981). "A Gaussian expression to describe φ(ρz) curves for quantitative electron probe microanalysis". X-Ray Spectrometry. 10 (3): 138. doi:10.1002/xrs.1300100311.
Norrish, K.; Hutton, J. T. (1977). "Plant analyses by X-ray spectrometry I—Low atomic number elements, sodium to calcium". X-Ray Spectrometry. 6: 6–11. doi:10.1002/xrs.1300060104.