1. E.P. Wood and K.L. Nimmo,J. Electron. Mater. 23, 709 (1994).
2. Z.D. Xia, Y.P. Lei, Y.W. Shi,Electron. Process Technol. 23, 185 (2002).
3. K. Suganuma,Curr. Opin. Solid State Mater. Sci. 5, 55 (2001).
4. B. Richards and K. Nimmo,An Analysis of the Current Status of Lead-Free Soldering-Update 2000 (London, U.K.: Department of Trade and Industry, 2000).
5. D.R. Frear,Electron. Inf. Technol. 118, 81 (2001).