The best evidence for efficacy from adequately designed randomized controlled trials (RCTs) is available for Coccinia indica and American ginseng. Chromium has been the most widely studied supplement. Other supplements with positive preliminary results in
This site offers access to selected papers on software testing. The main focus lies on papers related to functional and evolutionary testing as well as their automation. Most of the papers are available in pdf-format or are linked to the original source.
Furthermore, this site offers a free download of the Classification-Tree Editor CTE/XL.