1. ‘Engineering the Future’, Open University Course, T173, Block 3, Part 5, ‘Lead-free solders’, (2001)
2. W.J. Plumbridge, R.J. Matela, A. Westwater, Structural Integrity and Reliability in the Electronics – Enhancing Performance in a Lead-Free Environment (Kluwer, Dordrecht, Boston, London, 2003) Chapter 1
3. M.R. Harrison, J.H. Vincent, H.A.H. Steen, Solder. Surf. M. Technol. 13, 21 (2001)
4. B. Richards, C.L. Levogner, C.P. Hunt, K. Nimmo, S. Peters, P. Cusack, Lead-Free Soldering – An Analysis of the Current Status of Lead-Free Soldering (Dept. Trade and Ind.,1999)
5. W.J. Plumbridge, C.R. Gagg, J. Mater. Sci.- Mater El. 10, 461 (1999)