1. Bank, H. and Okrusch, M., Über rubin—vorkommen in Marmoren von Hunza (Pakistan), J. High Resolut. Chromatogr. Chromatogr. Commun., 1976, vol. 25, no. 2, pp. 67–77.
2. Batalina, A.A., Murzin, V.V., and Kisin, A.Yu., Isotope composition and temperature of formation of ruby-bearing marbles of the Alabash occurrence, Middle Urals, Ezhegodnik-2002 (Yearbook-2002), IGG UrO RAN: Yekaterinburg, 2003, pp. 168–170.
3. Baumgartner, L.P. and Valley, J.W., Stable isotope transport and contact metamorphic fluid flow, Rev. Mineral., 2001, vol. 43, pp. 415–468.
4. Beaudoin, G. and Therrien, P., The updated web stable isotope fractionation calculator, Handbook of Stable Isotope Analytical Techniques, Elsevier, 2009, vol. 2, pp 1120–1122.
5. Bowersox, G.W., A status report on gemstones from Afghanistan, Gems Gemol., 1985, vol. 21, no. 4, pp. 192–204.