Bonnie Blackburn, Leofranc Holford-Strevens, "Calendars and chronology", The Oxford companion to the year (Oxford, 1999), 659–937.
Bonnie Blackburn, Leofranc Holford-Strevens, The Oxford companion to the year (Oxford, 2003, a corrected reprinting of the 1999 original edition).
Georges Declercq, Anno Domini: The origins of the Christian era (Turnhout, 2000); idem, "Dionysius Exiguus and the introduction of the Christian era", Sacris Erudiri41 (2002): 165–246.
Duta, Florian, "Des précisions sur la biographie de Denys le Petit", Revue de droit canonique, 49: 279–96 (1999)
Charles W. Jones, "Development of the Latin ecclesiastical calendar", in Bedae opera de temporibus (Cambridge, Mass., 1943), 1–122.
Otto Neugebauer, Ethiopic astronomy and computus, Österreichische Akademie der Wissenschaften, philosophisch-historische klasse, sitzungsberichte, 347 (Vienna, 1979).
Gustav Teres, "Time computations and Dionysius Exiguus", Journal for the history of astronomy, 15 (1984): 177–188.