There was a recent discussion on the LRNASST email listserv about publications that described the results of using Supplemental Instruction in science-related courses. I maintain an annotated bibliography on postsecondary peer cooperative learning programs including SI. A sort of my database revealed about 200 entries. Click on this web link to download a copy of the annotated biblioraphy. It is about 40 pages and is in the Rich Texture Format. RTF can be openned by most word processors including Word. Enjoy.