jvrb offers the readers the use of Open URL. This is service that is related to the references of the document. Any reference contains a weblink in its title that starts an availability check for the corresponding source in selected libraries. The availability check does not depend on the type of the referred source: books, proceedings, articles in a printed journal, tech reports or electronic manuscripts, because different types of sources searchable. References pointing to websites are linked directly. This service is beneficial for the reader who would like to receive detailed information about a specific aspect mentioned in the article quickly. But the use of techniques like Open URL indicate the capabilites of electronic publishing: the connection of related information through web-services produce additional values and future developments in form of new applications are even going to increase this benefit.