Deux mille ans d'église in question. - Martelet, Gustave. (OLS)http://ftis/name/57184 (Cerf, 1990)

Potestas clavium - Sestov, Lev, 1866-1938. (OLS)http://ftis/name/73489; Macchetti, Enrico. (OLS)http://ftis/name/80407; Tiengo, Glauco. (OLS)http://ftis/name/80406 (Bompiani, 2009)
Testo russo a fronte.