1. K. Frederiksson and K. Keil, Geochim. Cosmochim. Acta 27(1963)717.
2. A. Bonazzi, I. Ortalli, G. Pedrazzi, K. Jiang and X. Zhang, Hyp. Int. 70(1992)953.
3. R.T. Dodd,Meteorites (Cambridge University Press, 1981).
4. G.M. Bancroft,Mössbauer Spectroscopy, An Introduction for Inorganic Chemists and Geochemists (McGraw-Hill, 1973) p. 172.
5. J.M.D. Coey, Mössbauer spectroscopy of silicate minerials, in:Mössbauer Spectroscopy Applied to Inorganic Chemistry, Vol. 1, ed. G.L. Long (Plenum Press, New York, 1984) pp. 465–468.