Les diaconesses : essai historique - Martimort, Aimé Georges. (OLS)http://ftis/name/55014 (CLV-Edizioni Liturgiche, 1982)

The Presence of Transcendence : Thinking 'Sacrament' in a Postmodern Age - Boeve, Lieven. (OLS)http://ftis/name/68513; Ries, Julien. (OLS)http://ftis/name/51099 (Peeters, 2001)