Historical background, identification of important sources, and theological perspectives on hymns originating ca. 500 to 900 C.E. in the northwestern islands and continent of Europe west of the Elbe River and north of the Alps and Pyrenees mountains.
Ferriby, P. G. (2019). Insular and Carolingian hymns. In M. A. Lamport, B. K. Forrest, & V. M. Whaley (Eds.), Hymns and hymnody: Historical and theological introductions, Volume 1: From Asia Minor to Western Europe (pp. 106-128). Cascade Books.