lehman formula hello and welcome to wikipedia we welcome and appreciate your contributions such as lehman formula but we regretfully cannot accept copyrighted text or images borrowed from either web sites or printed material this article appears to be a direct copy from as a copyright violation lehman formula appears to qualify for speedy deletion under the speedy deletion criteria lehman formula has been tagged for deletion and may have been deleted by the time you see this message if the source is a credible one please consider rewriting the content and citing the source if you believe that the article is not a copyright violation or if you have permission from the copyright holder to release the content freely under the gfdl you can comment to that effect on talk lehman formula if the article has already been deleted but you have a proper release you can reenter the content at lehman formula after describing the release on the talk page however you may want to consider rewriting the content in your own words thank you and please feel free to continue contributing to wikipedia regards