1. G.M. Potter, H.B. Salisbury, Innovations in gold metallurgy, Min. Congr. J. (1974) 54 pp.
2. New aspects in thiourea leaching of precious metals;Schultze;J. Metals,1994
3. S. Ubaldini, R. Massidda, C. Abbruzzese, F. Vegliò, L. Toro, Gold recovery from finely disseminated ore by use of cyanidation and thioureation, in: Kemal, Arslan, Cenbazogen (Eds.), Changing Scopes in Mineral Processing, Balkema, Rotterdam, 1996, pp. 559–562.
4. Il processo alla tiourea per il recupero di oro da materie prime minerali;Abbruzzese;Ind. Miner.,1995
5. The dissolution of gold in acidic solutions of thiourea;Groenewald;Hydrometallurgy,1976