Golongan platina: Perbedaan antara revisi
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* [http://www.platinummetalsreview.com/ Platinum Metals Review: A free, quarterly journal of research on the science and technology of the platinum group metals and developments in their application in industry]
* [https://www.accenture.com/us-en/insight-final-obstacles-for-sustainable-asteroid-mining?c=res_nrfy15twt_10000003&n=smc_0715 Accenture report on platinum group metals from non-terrestrial sources]
* [http://www.pgmdatabase.com/ The PGM Database: Data defining the physical properties and characteristics of the platinum group metals and their alloys] {{Webarchive|url=https://web.archive.org/web/20190701184414/http://www.pgmdatabase.com/jmpgm/index.jsp |date=2019-07-01 }}
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