1. Smiryagin, A.P., Promyshlennye tsvetnye metally i splavy (Industrial Nonferrous Metals and Alloys), Moscow: Metallurgizdat, 1974.
2. Novikov, I.I., Medi splavy. Kratkaya khimicheskaya entsiklopediya (Copper Alloys. The Brief Chemical Encyclopedia), Knunyants, I.L., Ed., Moscow: Sovetskaya entsiklopediya, 1964, vol. 3.
3. Copper-Nickel Alloy Grades, in Marochnik stali i splavov (Steel and Alloy Classifier), http://www.splav.kharkov.com/choose-mat.php?class-id=61 .
4. German Silvers, in Spravochnik Khimika (Chemist’s Handbook), http://chem100.ru/text.php?t=131b .
5. Cupronickel, http://en.wikipedia.org/wiki/Cupronickel .