retractcheck_dir: Check files in directory for retractions
Description
Check all HTML, DOCX, PDF, and RTF files in a directory for updates to
referenced DOIs.
Usage
retractcheck_dir(path, ...)
Arguments
path
Path to directory to check
...
Arguments passed on to retractcheck
database
Character. Abbreviation of the databases to search
(or for openretractions.com). # #' and rw for #
#' retractiondatabase.com). Note that in the absence of an API,
# #' searching retractiondatabase.com is rather slow.
return
Character. If all, all DOIs are queried and
all results are returned; if unique, the DOIs are
queried in the order specified until either a correction or
retraction notice is found or all databases have been queried.