The article deals with the Christological Polemic between Saint Augustine and Julian of Eclanum, to elucidate if the knowledge that Julian had of Apollinarianism was accurate; if it is possible to individuate the source of this knowledge; if this source had also provided Julian his Aristotelian ideas, which are typical of his theological argumentations.

The article deals with the problem of the author and the correct translation of the original Greek text quoted in c. Iul. 1. 16-17, and focuses on the influence that the antimanichaean treatise of Serapion of Thmuis had in the polemic of Julian of Eclanum against Augustine.

The article deals with the traces of the works of Theodore of Mopsuestia in the polemical fragments or remainig works of Julian of Eclanum.

The article deals with the Christian sources of Augustine’s Trinarian teachings in his first Dialogues, answering to the Statements of O. du Roy, and pointing to the Christian influence of Ambrose and Marius Victorinus

The article deals with the influence of Tertullian within Augustine’s De libero arbitrio, asserting that this helps to understand better this work and also the Early Ideas of Augustine.

The article deals with the traces that Ambrose’s works De fide, De Spiritu Sancto, Exameron, De paradiso, Expositio euangelii secundum Lucam y Expositio Ps. 118, left in Augustine's works befare his ordination as Bishop.

The article deals with the traces of Marius Victorinus’ Commentaries on the Epistles of Paul in Augustine’s Dialogues of Cassiciacum, especialy on the Trinitarian teachings and in the expression of Christian Faith.

The article deals with Augustine’s Monastic Rule (Praeceptum) focusing on the Old Literary Preceptive’s Rules, offering a new reading of its Argument and a new approach to its Literary aspects.

The article deals with the traces of the work of Marius Victorinus in Augustine’s Trinitarian thought, especially in Augustine’s Cassiciacum Dialogues, De fide et symbolo and De Trinitate.

The article deals with the oriental sources of Julian of Eclana’s Theology in his works Ad Turbantium and Ad Florum. In the former, texts from John Chrysostom and Pseudo Basil are studied. In the latter, the praise of ortodoxy of John Chrysostome, Basil and Theodore of Mopsuestia are studied.