To delete references, right click and select Delete document, or click and drag the reference to the Trash folder, which is found at the bottom of all the folders in the left pane.
References will remain in Trash until you empty the Trash by right clicking on the Trash folder, or going to the File menu, and selecting Empty trash.
Mendeley Reference Manager
Mendeley Desktop continues to be available for existing users but is no longer available to download and is no longer under development. For guidance on using the new Mendeley Reference Manager, Mendeley Cite and Mendeley Web, see our Mendeley guide.