A New Reconstruction of the Text of 2 Corinthians in Pelagius' Commentary on the Pauline Epistles - Wilbert P. Stelzer - Bog

What sort of Latin biblical text did Pelagius have when he wrote his commentary on the Pauline Epistles? Did he use an Old Latin text, a Vulgate text, or some combination of the two? Of the manuscripts that pass down Pelagius's commentary, some have a strong Vulgate character while others are closer to the Old Latin.