Buzón, R., Die Briefe der Ptolemäerzeit: ihre Struktur
und ihre Formeln, Diss., Heidelberg 1984
Exler, F.X., A Study in Greek Epistolography, Wash. D.C. 1923;
out of date, but still useful for the various formulas.
Koskenniemi, H., Studien zur Idee und Phraseologie d. griech. Briefes
bis 400 n.Chr., Suomalaisen tiedeakatemain Toikituksia 102.2,Helsinki
1955
Naldini, M., Il cristianesimo in Egitto,Firenze 1968; contains
a number of letters as evidence for the early church in Egypt..
Tibiletti, G., Lettere private nei papiri greci dell III e IV secolo
d.c.tra paganesimo et christianesimo, Milano 1979
White, J.L., The Form and Function of the Body of the Greek Letter:
A Study of the Letter-Body in the Non-Literary Papyri and in Paul the
Apostle, Missoula 1972
