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2. H. Danielsson, Surface Mount Technology with Fine Pitch Components, 1st ed. (London: Chapman & Hall, 1995).
3. IPC Test Methods Manual IPC-TM-650, 2.4.43 Solder Paste-Solder Ball Test, http://www.ipc.org/html/fsresources.htm.
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5. C. Wall and S. Tibbals, SMT Mag. (1998), pp. 66–70.