Thank you for your posting to WP:MCQ. It seems that your message was posted to the wrong forum, as WP:MCQ is for questions about copyright, as it pertains to material uploaded to Wikipedia. I have taken the liberty of moving your question to Wikipedia:Reference desk/Science; however, I suggest you go there and elaborate on the question so that other users will better understand exactly what you are asking. Bwrs (talk) 00:08, 1 July 2008 (UTC)