260 C.E. is the more generally accepted date, although some sources support the date of 258. See the detailed discussion at Leadbetter, William (24 September 1998). "Ingenuus (260 A.D.)". De Imperatoribus Romanis: An Online Encyclopedia of Roman Emperors. Archived from the original on 24 January 2012. citing, inter alia, Drinkwater, John (1987). The Gallic Empire: Separatism and continuity in the north-western provinces of the Roman Empire A.D. 260 - 274. Historia Einzelschriften #52. Stuttgart: Steiner. pp. 104–105. ISBN3-515-04806-5.
Antun, Mayer (1935). "Ime Mursa". Vjesnik Arheološkog Muzeja U Zagrebu. 16 (1). Archived from the original on 18 June 2015.
260 C.E. is the more generally accepted date, although some sources support the date of 258. See the detailed discussion at Leadbetter, William (24 September 1998). "Ingenuus (260 A.D.)". De Imperatoribus Romanis: An Online Encyclopedia of Roman Emperors. Archived from the original on 24 January 2012. citing, inter alia, Drinkwater, John (1987). The Gallic Empire: Separatism and continuity in the north-western provinces of the Roman Empire A.D. 260 - 274. Historia Einzelschriften #52. Stuttgart: Steiner. pp. 104–105. ISBN3-515-04806-5.
"Middle Ages". City of Osijek: History. City of Osijek. 2010. Archived from the original on 8 October 2013.