Micrologvs de ecclesiasticis observationibvs ... - Beleth, Jean, -1182; Maurus, Hrabanus, 780-856 (Coloniae : Apud Geruvinum Calenium & Haeredes Iohannis Quentel, 1568)
In: Hittorpius Melchior - De Divinus catholicae officiis ac ministeriis; (1568), pp. 434-464
There seems to be a consensus on the authorship of Hrabanus Maurus & Johannes Beletus