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The leading paragraph of this article seems to be a copyvio. Rl 17:33, 22 May 2005 (UTC)
- Fixed by Weihao.chiu. Thank you. Rl 08:09, 23 May 2005 (UTC)
The two links to the Casix website (in the optical properties table) seems to be broken. --J B 12:06, 28 January 2008 (UTC)