Zotero

• To sort your references: click on the heading of the field you wish to sort. 
• To change your library's display (add or remove fields), right-click on the paper clip icon on the right of the field headings.
• To search for references: one simple search function   with 3 different options and one advanced search function .
• To merge duplicates: click on Duplicate Items in the left pane of your library.

The Zotero timeline allows you to visualize the items in a Zotero collection on a chronological basis, using either the publication date or the date you added the item to Zotero.

To create a timeline, go to the Tools menu, and select "Create Timeline". A timeline will be created for the collection which is open on your desk. You can navigate laterally in the timeline, change the default option "date published" to "date added" or "date modified", or highlight a specific search term in one of the 4 colors provided.