[Vim-latex-devel] two cite completions in one command

[Rosas, A. <a4...@uc...>]

Dear all,
is there anyway to use the <F9> completion to cite two different works in one cite
command. I want to type \cite{book1, book2}, but all I can do is use <F9>
to fill in book1. If I press <F9> after the comma, nothing happens.

Thanks in advance.
Alexandre