Free trial to XreferPlus - trial active until 10 June 2007

Xreferplus is a collection of reference materials from over 50 publishers. It allows you to search across topics and across material type as well as making cross-references. The trial requires a special username and password to access which you can get hold of by emailing library@medsch.ucl.ac.uk (trail open to UCL staff and students only i'm afraid).