1. H.H. Manko, Solder and Soldering, 2nd Edition, McGraw-Hill, New York, 1979.
2. ASM International, Electronic Materials Handbook, Vol. 1, Packaging, Materials Park, OH, 1989, p. 55.
3. T.P. Vianco, Development of alternatives to lead-bearing solders, in: Proceedings of the Technical Program on Surface Mount International, 19 August–2 September 1993, San Jose, CA.
4. R.E. Reed-Hill, Physical Metallurgy Principles, PWS Publishing Company, Massachusetts, 1994, pp. 306–307.
5. K.J.R. Wassink, M.M.F. Verguld, Manufacturing Techniques for Surface Mounted Assemblies, Electrochemical Publications Ltd., 1995, GB-Port Erin, British Isles, p. 17.