The Admonitio Synodalis has been edited dozens of times. Semi-critical edition: Amiet, ‘Une admonitio synodalis’. Edition of Rather’s version: MGH. Edition of Ordo 14 version: MGH. Recent lit: Hamilton, Practice of penance, pp. 64-67; Hartmann, Kirchenrecht, 299-300; Miller, Clothing, p. 12. English translation: Reid, Complete Works, pp. 124ff.
 Pokorny, ‘Nochmals zur Admonitio’.
 The earliest manuscripts appear to be three tenth-century mss made in Verona for Rather of Verona from the 960s and 970s (Munich Clm 6340, Laon BM 274 and Berlin Phill. 1676), followed by two Mainz Regino manuscripts, c. 1000, in which the Admonitio text has been inserted by the same scribe (!) – Hoffmann, Buchkunst, pp. 262-3, 266.
 Parkes’s recent redating of the RGP to the eleventh century has significant implications for the transmission history of the AS. See Parkes, ‘Henry II, liturgical patronage and the birth of the 'Romano-German Pontifical’. Rather of Verona is now the earliest known witness to the work: could he have been involved in its compilation?
 Avril, ‘Les instructions’.
 On the manuscript, see Newton, Scriptorium, p. 144; Reynolds, 'South Italian ordination allocution'.
 Amiet says this was “une cinquantine d’années après sa transcription”, but I am not sure how precise we can be, given the fairly informal nature of the scribal interventions. These edits are not present in the Monte Cassino 451 sister manuscript (my thanks to Henry Parkes for assistance on this point).