Freund, H.-J., Gonska, H., & Polaschegg, H. (1977). Influence of Matrix Effects
on Quantitative Chemical Analysis by ESCA. In R. Dobrozemsky (Ed.), Proceedings
of the Seventh International Vacuum Congress and the Third International Conference on Solid Surfaces of the International
Union for Vacuum Science, Technique and Applications (1977, pp. 2263-2266). Vienna: IVC, ICSS.