1. Thiourea as a lixiviant for gold and silver;Hiskey,1981
2. A study of the leaching of gold and silver by acidothioureation;Chen;Hydrometallurgy,1980
3. Environmental considerations in gold flowsheet development;Lawrence,1987
4. Evaluation of the potential carcinogenicity of thiourea;Environmental Monitoring Services Inc.,1988
5. Innovations and options in gold metallurgy;Woodcock,1988