1. M. Rehkäper and A. M. Halliday, Int. J. Mass Spec. Ion Proc 58, 123–133 (1998).
2. K. D. Collerson, B. S. Kamber, and R. Schoenberg, Chem. Geol. 188, 65–83 (2002).
3. I. V. Chernyshev, A. V. Chugaev, and K. N. Shatagin, Abst. of the Vinogradova XVII Symp. on Geochemistry of Isotopes (GEOS, Moscow, 2004), pp. 274–275 [in Russian].
4. I. V. Chernyshev, A. V. Chugaev, and K. N. Shatagin, Geokhimiya, No. 11, 1155–1168 (2007) [Geochem. Int. 45, 1065 (2007)].
5. G. D. Kamenov, T. M. R. Perfita, I. R. Jonassonb, and P. A. Mueller, Chem. Geol. 219, 131–148 (2005).