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Entsiklopediya Iranica "After concluding a hasty peace with Heraclius (as the result of which all Sasanian territorial gains were given up and the “true cross” restored; Nicophorus, p. 14; Theophanes, pp. 272-73; Chronicon Paschale, p. 14)"
Dignas, Assistant Professor of History Beate; Dignas, Beate; Winter, Engelbert (2007). So'nggi antik davrda Rim va Fors: qo'shnilar va raqiblar. Kembrij universiteti matbuoti. p. 150. ISBN 9780521849258.
Dignas, Assistant Professor of History Beate; Dignas, Beate; Winter, Engelbert (2007). So'nggi antik davrda Rim va Fors: qo'shnilar va raqiblar. Kembrij universiteti matbuoti. p. 148. ISBN 9780521849258.
Shahbazi 2004 yil, 466-467 betlar.
McNabb, James Brian (2017). A Military History of the Modern Middle East. ABC-CLIO. p. 10. ISBN 9781440829642.
