1. International Commission on Radiological Protection, Publication 23, Report of the task group on reference man, Pergamon, Oxford, (1975).
2. L.J.Somervaille, “In-vivo measurement of tibia lead levels by x-ray fluorescence” PhD thesis, University of Birmingham, UK, 1984.
3. J.A.A. Brito, D.E.B. Fleming, D.R. Chettle, “Structural analysis of relationships amongst bone lead, cumulative blood lead and current blood lead” Proceedings of the European Conference on Energy Dispersive X-Ray Spectrometry, 1998, ed.s J.E Fernandez, A. Tartari, 235–239, (1999).