Varzos, Konstantinos (1984) (Greek). [The Genealogy of the Komnenoi]. A. Thessaloniki: Centre for Byzantine Studies, University of Thessaloniki. http://www.kbe.auth.gr/bkm20a1.pdf.
Kazhdan, Alexander, ed (1991). The Oxford Dictionary of Byzantium. Oxford University Press. ISBN 978-0-19-504652-6.