Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleLetters to the editor.AuthorsSeaman, A.; Webster, H. W. M.; Hendry, G. L.; Langford, J. I.; Grubis, B.PublicationXRS: X-ray Spectrometry, 1974, Vol 3, Issue 3, p133ISSN0049-8246Publication typeArticleDOI10.1002/xrs.1300030310