Maria in der Offenbarung - Bea, Agostino <Card. ; 1881-1968>. (OLS)http://ftis/name/54664; Engberding, Hieronymus. (OLS)http://ftis/name/84890; Böminghaus, Ernst. (OLS)http://ftis/name/84889 (Katholische Marienkunde, 1947)