Ward, R.J., and Wood, B.J., A Comparison of Experimental and Theoretically Derived Sensitivity Factors for XPS, Surf. Interfacial Anal . 18, 679-684 (1992).
2.
Ward, R.J., Willis, H.A., George, G.A., Guise, G.B., Denning, R.J., Evans, D.J., and Short, R.D., Surface Analysis of Wool by X-Ray Photoelectron Spectroscopy and Static Secondary Ion Mass Spectrometry, Textile Res. J . 63, 362-368 ( 1993).