I concili ecumenici - Camelot, Pierre-Thomas. (OLS)http://ftis/name/53161; Zani, Antonio. (OLS)http://ftis/name/51128; Frost, Francis. (OLS)http://ftis/name/70004; Christophe, Paul. (OLS)http://ftis/name/62668 (Queriniana, 2001)