Editing Irnerius (section)

== Works ==
[[File:Irnerius – Glossae ad Digestum vetus, 12th-century – BEIC 7271247.jpg|thumb|''Glossae ad Digestum vetus'', 12th-century manuscript. [[Padua]], Biblioteca Universitaria di Padova, Fondo manoscritti, ms. 941, ff. 1-198.]]

According to ancient opinion (which, however, has been much controverted), Irnerius was the author of the [[epitome]] of the ''Novellae'' of Justinian, called the ''Authentica'', arranged according to the titles of the Code. His ''Formularium tabellionum'' (a directory for notaries) and ''Quaestiones'' (a book of judicial decisions) are no longer extant.<ref name=EB1911/>

The ''Summa Codicis'', attributed to Irnerius by Herman Fitting in his 1894 edition <ref>Fitting, ''Summa Codicis des Irnerius, mit einer Einleitung'' (Berlin, 1894)</ref> is now widely considered a later work of between 1130 and 1159, but remains the earliest known summa on Justinian's ''Code'' <ref>Lange, ''Rómisches Recht im Mittelalter I'' (Munich, 1997), pp. 403-405.</ref>

Another important work, ''Quaestiones de juris subtilitatibus'',<ref>Fitting, "Quaestiones de juris subtilitatibus des Irnerius, mit einer Einleitung" in ''Festschrift zum 200jährigern Jubiläum der Universitat Halle-Wittenberg'', 1894.</ref> was generally ascribed to Irnerius until Hermann Kantorowicz published a manuscript from the [[British Library|British Museum]].<ref>Kantorowicz with W.W. Buckland, ''Studies in the Glossators of the Roman Law: Newly Discovered Writings of the Twelfth Century'' (New York, 1939) reassigned ''Quaestiones de juris subtilitatibus'' to [[Placentinus]].</ref>

Other juridical works and glosses that are ascribed to Irnerius are extant only in fragments, or their authorship is uncertain.