cdlatex-mode

$ scp gfif.udea.edu.co:/usr/share/emacs/site-lisp/cdlatex.el /tmp
$ sudo cp /tmp /usr/share/emacs/site-lisp/

(add-hook 'org-mode-hook 'turn-on-org-cdlatex)
(autoload 'cdlatex-mode "cdlatex" "CDLaTeX Mode" t)
(autoload 'turn-on-cdlatex "cdlatex" "CDLaTeX Mode" nil)
(add-hook 'LaTeX-mode-hook 'turn-on-cdlatex) ;with AUCTeX LaTeX mode