Liu, Yin, and Ariel Brecht. “Leaf 4 in Otto Ege’s Fifty Original Leaves Portfolio — A New Identification: Sermons by Philip the Chancellor (With a Partial Handlist of Sermons on Leaf 4 from Various Collections)”. Florilegium, vol. 33, June 2020, pp. 167-91, https://journals.lib.unb.ca/index.php/flor/article/view/31195.