1. R. Hull and J. C Bean, J. Vac. Sci. Technol. A 7 (4), (1988), p.2580.
2. A.W. Laubengayer and D.S. Morton, J. Am. Chem. Soc. 54, (1932), p.2303.
3. M. Schweizer, S.D. Cobb, M.P. Volz et al.; J. Cryst. Growth 235-1-4, (Feb. 2002), pp.161-166.
4. IEEE Std 1160-1993; IEEE St. test procedure for high-purity Germanium crystals for radiation detectors.
5. P. Wang; The Sylvania technologist, XI-2, (Apr. 1958), pp.50-58.