Articles and other information pages: Bibliographic references II
When the mouse moves over a citation, the full reference becomes visible in the margin. Clicking on the book icon at the bottom of a reference box opens the full site bibliography in a separate window, marking the relevant entry with a side bar.
Bibliographic references stay visible until they are clicked or the mouse moves over another reference. To keep the reference present so that several can be viewed together, click on the citation itself.