03-27-2014, 10:51 PM
In JSTOR, the term also appears 5 times, J. David Thomas' "Diocletian's Birthday and Date of Accession: P.Mich. Inv. 5298a Reconsidered" (1999) being the last one listed (quoting P. Panop. Beatty 2 too). I doubt, though, that anyone has really explored it more deeply.