1. R. M. Nadkarni and D. P. Agarwal, ‘Impurities in Gold: Pedigree versus Specification’,Precious Metals 1988, Int. Precious Metals Inst., Allentown, PA, p. 283
2. A. Savolainen, ‘Modern Gold Assaying’,Precious Metals 1988, Int. Precious Metals Inst., Allentown, PA, p. 55
3. D. P. Agarwal and G. Raykhtsaum, ‘Materials Characterization and Failure Analysis in Jewelry Scientific Instrumentation’, presented at the Santa Fe Symposium on Jewelry Manufacturing Technology, 1992
4. R. M. Nadkarni, D. J. Kinneberg, M. B. Mooiman and P. Cettou, ‘Precious Metals Processing’, Elliott Symposium, Iron and Steel Society, Warrendale P. A. 1990, p. 96
5. D. J. Kinneberg, M. B. Mooiman and W. D. Müller, ‘Gold Refining — Past, Present and Future’,Precious Metals 1996, Int. Precious Metals Inst., Allentown, PA, 1996, p. 433