1. Submicroscopic gold in pyrite concentrate;McPheat,1969
2. Gold-ore mineralogy and its relation to metallurgical treatment;Henley;Minerals Sci. Eng.,1975
3. Application of biotechnology in the recovery of gold;Attia,1985
4. Gold and silver extraction from sulfide ores;Addison,1980
5. The biotankleach process for the treatment of refractory gold/silver concentrates;Bruynesteyn,1985