Evaluating ease of use and coverage, a 2006 study concluded that “Sc is easy to navigate, even for the novice user. The ability to search both forward and backward from a particular citation would be very helpful to the researcher. The multidisciplinary aspect allows the researcher to easily search outside of his discipline” and “One advantage of  is the depth of coverage, with the full WOS database going back to 1945 and Scopus going back to 1966. However, Scopus and WOS complement each other as neither resource is all inclusive.”^[3]