To enable this linking feature, the metadata (item record) must contain the OpenURL string. This is made possible by using a locally defined Dublin Core field identifier, openurl. DSpace's item record display page was modified to enable a link-resolver button when the item contains an OpenURL (see Figure 4). Program was developed to query OCLC's OpenURL Resolver Registry on-the-fly while displaying the button. By doing so, uscrs will scc their own institution's link-resolver, such as WebBridge for HKUST. When users click on the button, the link-resolver will try its best to identify external sources that contain the published version