Perhaps his edition of the Leges Visigothorum (1579) was his most valuable contribution to historical science; in the same line he edited the Capitula of Charlemagne, Louis the Pious, and Charles the Bald in 1588, and he also assisted his brother Francois in preparing an edition of the Corpus juris canonici (1687).
His "semi-Pelagian" opposition to Augustine is dealt with by Prosper of Aquitania in his Pro Augustini doctrina responsiones ad capitula objectionum Vincentiarnarium.
Zimmer follows previous critics in rejecting the Prologus maior (§§ 1, 2), the Capitula, or table of contents, and part of the Mirabilia which form the concluding section.
For this purpose a synod of abbots was assembled at Aix-laChapelle in 817, and a series of 80 Capitula passed, regulating the life of the monasteries.
The scheme as a whole was shortlived and did not survive its originator; but the Capitula were commonly recognized as supplying a useful and much-needed supplement to St Benedict's Rule on points not sufficiently provided for therein.