the citation query can be any of:
- A bibentry object,
- An article or dataset DOI,
- The URL to a website such as a scientific journal article page
- A path to a PDF file (will attempt to extract citation info)
- A search query string, such as part of the article title,
year, or journal (Queries CrossRef)
- The bibkey to anything that has already been cited.
knitcitations will attempt to find the most complete citation information
based on the information specified. In some cases that information may
be incomplete. When using search queries rather than an exact reference
(such as URL, DOI, pdf, or bibkey) the desired article may not be found or
many not be uniquely determined by the string. The most relevant search
result is returned, so consider refining search terms as necessary.
See examples.