For the diplomatic transcriptions in the library, we need to display the source on every page but there isn't always a piece of text to encode with the ref element (type="bibl"). Janelle's short-term solution for Chruso-thriambos is to add a bracketed note to each page with information about the documentary witness and to tag the author's name in that information.
It would be better, however, to include the bibliographical information about the documentary witness in the TEI header and tell the processor to display this information on every page. The TEI element to use is sourceDesc. Ask Stewart how to make this info display.