... 2001

http://cxc.harvard.edu/cal/Links/Letg/User/Review_311001/eff_area.html

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... code

http://saturn.sron.nl/~kaastra/spex/line.ps.gz

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... web

http://physics.nist.gov/cgi-bin/AtData/main_asd

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... weakest

Recent calculations for Fe VIII by Griffin et al. (2000) give for our observed Fe VIII ratio 131/168=0.14a temperature of $\sim$2.5 MK, near the high-energy limit of the DEM distribution.

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