See:
- John Boardman, "Nabonidus: Babylonia from 605–539 B.C.", in The Cambridge Ancient History vol. 3.2, p. 249. Contributor John Boardman. Cambridge University Press, 1991.
See:
Greek Opis, Akkadian Upî or Upija.
Battle of Ctesiphon (263)
Battle of Ctesiphon (198)