1. St. Jankuhn, T. Butz, R.-H. Flagmeyer, T. Reinert, J. Vogt, J. Hammerl, R. Protsch von Zieten, M. Wolf, H. Baumann, K. Bethge, I. Symietz, in: J.L. Duggan, I.L. Morgan (Eds.), CP392, Appl. of Accelerators in Res. and Ind., AIP, Woodbury, NY, 1997, p. 575
2. T.D. Price (Ed.), The Chemistry of Prehistoric Human Bone, Cambridge University Press, Cambridge, 1989
3. L.T. Runia, The Chemical Analysis of Prehistoric Bones, B.A.R., Oxford, 1987
4. J. Hammerl, Ph.D. thesis, University of Frankfurt a.M., 1990
5. Ion microprobe analyses of ancient human bone