1. Mineralogy and Treatment of Refractory Gold from the Porgera Deposit, Papua, New Guinea;Robinson;Trans. I.M.M.,1983
2. Gold Ore Mineralogy and its Relation to Metallurgical Treatment;Henley;Mineral Sci. Eng.,1975
3. The Mineralogy of Gold and its Significance in Metal Extraction;Gasparrini;C.I.M. Bulletin,1983
4. Refractoriness of Certain Gold Ores to Cyanidation: Probable Causes and Possible Solutions;Jha;Mineral Processing and Extractive Metallurgy Review,1987
5. Mineralogy and Chemical Behaviour of some Refractory Gold Ores from the Barberton Mountain Land;Schweigart;N.I.M. Report No. 8,1986