1. Hallett K., Thickett D., McPhail D.S., and Chate R.J., Application of SIMS to silver tarnish at the British Museum, Appl. Surf. Sci., 2003, 203–204(3): 789.
2. Agarwal D.P., and Raykhtsaum G., Sterling Silver Alloy Compositions of Exceptional and Reversible Hardness, and Enhanced Tarnish Resistance, United States Patent, US7198683. 2009.
3. Chairuangsri T., and Nisaratanaporn E., Effects of Beryllium on Microstructure and Resiliency of Silver-Copper Alloy, Chiang Mai. J. Sci., 2010, 37(2): 260.
4. Yang Q.Q., Xiong W.H., and Yang Z., Corrosion and tarnish behavior of 925Ag75Cu and 925Ag40Cu35Zn alloys in synthetic sweat and H2S atmosphere, Rare Metal Mat. Eng., 2010, 39(4): 278.
5. Miwa M., and Watanab Y., On the structure of silver sulphide and silver-arsenic alloy grown on silver crystals, J. Phys. Soc. Jpn, 1948, 3(1): 52.