@article {de Villiers:1966:0003-7028:298,
	author = "de Villiers, Daphne B. and van Wamelen, Diana and Strasheim, A.",
	title = "Semiquantitative Procedure for the Simultaneous Spectrographic Determination of Thirty Elements in Powder Samples",
	journal = "Applied Spectroscopy",
	volume = "20",
	number = "5",
	year = "1966",
	abstract = "A semiquantitative procedure for the simultaneous determination of a large number of elements in powder samples is described. Use is made of rapid evaporation of the samples in a controlled oxygen-argon atmosphere. Line intensities are estimated visually.",
	pages = "298-301",
	url = "http://www.ingentaconnect.com/content/sas/sas/1966/00000020/00000005/art00003",
	doi = "doi:10.1366/000370266774385877"
}