Search Filters/order by

I agree! I thought the way it was done in Papers 3 was good - once you entered a search term, a dropdown box allowed you to select Author, Source, Volume, Year, Title, First Author, Last Author,  Publisher, Issue, Keyword, Abstract, Editor, Pages, Identifier.

I would also add a "type of publication" filter as mentioned above so that "Reviews" for instance could be selected.

Thanks!