Create a citation string from package specific BibTex
entries, suitable to be used in Rd files. The entries are
looked in a file named REFERNCES.bib in the package's
root directory (i.e. inst/ in development mode).
Usage
cite(key, ..., REFERENCES = NULL)
Arguments
key
character vector of BibTex keys
...
extra arguments passed to
format.bibentry.
REFERENCES
package or bibentry specification
Value
a character string containing the text formated BibTex
entries