1. A. Ure , in Heavy Metals in Soils, ed. Alloway, B. J., Blackie, Glasgow, and John Wiley, New York, 1990, ch. 4, pp. 40–79.
2. C. W. McLeod , M. W.Routh, and M. W.Tikkanen, in Inductively Coupled Plasmas in Analytical Atomic Spectrometry, eds. Montaser, A., and Golightly, D. W., VCH, Weinheim, 2nd. edn., 1992, ch. 16, pp. 753–769.
3. Laser solid sampling for a solid-state-detector ICP emission spectrometer