From the introductory note to this entry:
Abbo, a native of Neustria and a pupil of Aimoin, was a monk of Saint-Germain-des-Prés; he died on 9 March sometime after 921. He is known for two works, the Bella Parisiacae urbis and a collection of Sermons. The first is divided here into two entries because, although there is some evidence that the entire work was known to the Anglo-Saxons, most of our information concerns only Book III, which circulated independently of the first two books. For a discussion of the little known about his life, see Önnerfors (1985 pp 16–18). For further bibliography, see CSLMA AG 1.3–7.