Bird, Graeme D. 2010. Multitextuality in the Homeric Iliad: The Witness of the Ptolemaic Papyri. Hellenic Studies Series 43. Washington, DC: Center for Hellenic Studies. http://nrs.harvard.edu/urn-3:hul.ebook:CHS_Bird.The_Witness_of_Ptolemaic_Papyri.2010.