Chronicon Paschale610. Heraclius arrived on 3 October, a Saturday. However, the chronicle later states that he entered the city on 6 October, "a Monday". The 5th is clearly intended.
Foss 1975, p. 722. Foss, Clive (1975). "The Persians in Asia Minor and the End of Antiquity". The English Historical Review. 90: 721–47. doi:10.1093/ehr/XC.CCCLVII.721.
Cameron 1979, p. 23. Cameron, Averil (1979). "Images of Authority: Elites and Icons in Late Sixth-century Byzantium". Past and Present. 84: 3. doi:10.1093/past/84.1.3.
Cameron 1979, pp. 5–6, 20–22. Cameron, Averil (1979). "Images of Authority: Elites and Icons in Late Sixth-century Byzantium". Past and Present. 84: 3. doi:10.1093/past/84.1.3.
Foss 1975, pp. 746–747. Foss, Clive (1975). "The Persians in Asia Minor and the End of Antiquity". The English Historical Review. 90: 721–47. doi:10.1093/ehr/XC.CCCLVII.721.
Sebeos, ch. 29. Sebeos. "Chapter 29". Sebeos' History: A History of Heraclius. Translated from Old Armenian by Robert Bedrosian. History Workshop. Archived from the original on 9 December 2008. Retrieved 22 October 2009.
John of Nikiû, Chronicle CXVI: "Heraclius fell ill with fever, and died in the thirty-first year of his reign in the month Yakâtît of the Egyptians, that is, February of the Roman months."
Sebeos, ch. 29. Sebeos. "Chapter 29". Sebeos' History: A History of Heraclius. Translated from Old Armenian by Robert Bedrosian. History Workshop. Archived from the original on 9 December 2008. Retrieved 22 October 2009.
worldcat.org
Seleznev 2012. Seleznev, Nicolay (2012). Ираклий и Ишоʿйав II: Восточный эпизод в истории «экуменического» проекта византийского императора [Heraclius and Ishoʿyav II: An Eastern Episode in the History of the 'Ecumenical' Project of the Byzantine Emperor]. Символ [Symbol] (in Russian). 61: Syriaca-Arabica-Iranica. Paris-Moscow: 280–300. ISSN0222-1292.
Pourshariati 2017, p. 141. Pourshariati, Parvaneh (2017). Decline and fall of the Sasanian empire : the Sasanian-Parthian confederacy and the Arab conquest of Iran. London: I.B. Tauris. ISBN978-1-78453-747-0. OCLC953439586.