Variable: reftex-bibliography-commands
reftex-bibliography-commands is a customizable variable defined in
reftex-vars.el.gz.
Value
("bibliography" "nobibliography" "setupbibtex\\[.*?database=" "addbibresource")
Documentation
LaTeX commands which specify the BibTeX databases to use with the document.
Probably introduced at or before Emacs version 22.1.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/reftex-vars.el.gz
(defcustom reftex-bibliography-commands
'("bibliography" "nobibliography" "setupbibtex\\[.*?database=" "addbibresource")
"LaTeX commands which specify the BibTeX databases to use with the document."
:group 'reftex-citation-support
:type '(repeat string))