author select only references for which any of the authors
matches the specified name
year select only references published in the specified year
pubtitle select only references that involve the specified
publication
order specifies the order in which the results are returned. You can
specify multiple values separated by commas, and each value may be appended
with .asc or .desc. Accepted values are: author, year, pubtitle, created,
modified, rank.
...
Value
a dataframe with the information about the references that match the query