Brooke, Christopher Nugent Lawrence, Aspects of Marriage Law in the Eleventh and Twelfth Centuries, in Kuttner, Stephan, Pennington,
Kenneth, Proceedings of the Fifth International Congress of Medieval Canon Law - Salamanca, 21-25 September 1976, Monumenta
iuris canonici, C/6, Biblioteca Apostolica Vaticana, Vatikan, 1980, 333-344 (Brooke 1980)
199,1 (334 Anm. 4 >),
202,30 (334 Anm. 4 <)