Hello, I'm Materialscientist. I wanted to let you know that I removed an external link you added, because to me it seemed inappropriate for an encyclopedia. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page, or take a look at our guidelines about links. Thank you. Materialscientist (talk) 05:25, 13 September 2012 (UTC)
Please do not add or change content without verifying it by citing reliable sources. Please review the guidelines at Wikipedia:Citing sources and take this opportunity to add references to the article. Thank you. Materialscientist (talk) 23:09, 13 September 2012 (UTC)