Fragmenta Vaticana Mosaicarum et Romanarum legum collatio - Krüger, Paul, <1840-1926>. (OLS)http://semarc/name/3259; Mommsen, Theodor, <1817-1903>. (OLS)http://semarc/name/3260 (Collectio librorum iuris anteiustiniani in usum scholarum)