@article {W.P.:October 2004:0032-1400:182,
	author = "W.P. Griffith",
	title = "Bicentenary of Four Platinum Group Metals",
	journal = "Platinum Metals Review",
	volume = "48",
	year = "October 2004",
	abstract = "This paper follows an earlier one on the discoveries of rhodium and palladium in 1803 by William Hyde Wollaston (1). In 1804, two more of the platinum metals: iridium and osmium were discovered, also in London. This paper concerns the bicentenary of their discovery by Wollaston's friend and collaborator, Smithson Tennant.",
	pages = "182-189(8)",
	url = "http://www.ingentaconnect.com/content/matthey/pmr/2004/00000048/00000004/art00011"
	doi = "doi:10.1595/147106704X4844"
}