Bibliografie
. With one foot in the font: the failed baptism of the Frisian king Radbod and the 8th-century discussion about the fate of unbaptized forefathers. In: . Early Medieval Ireland and Europe: Chronology, Contacts, Scholarship: Festschrift for Dáibhí Ó Cróinín. Turnhout: Brepols; 2015. pp. 577-596.