1. O. Eugster, S. Niedermann, Ch. Thalmann, R. Frei, J. Krarners, U. Krähenbuhl, Y.Z. Liu, B. Hofmann, R.H. Boer, W.U. Reimold and L. Bruno,J. Geophys. Res., 1995,100, No. B12, 24, 677
2. R.H. Boer, F.M. Meyer, L.J. Robb, J.R. Graney, T.W. Wennemann and S.E. Kesler,Economic Geology, 1995,90, 860
3. B. Hofmann,The Mineralogical Record, 1992,23, 283.
4. H.Y. Jr. McSween,Geology, 1984,12, 3
5. A.H. Treiman, M.J. Drake, M.-J. Janssens, R. Wolf and M. Ebihara,Geochim. Cosmochim. Acta, 1986,50, 1071