The First Epistle of Clement to the Corinthians1
Didache
The Epistle of Mathetes to Diognetus
Ignatius to the Ephesians
Ignatius to the Magnesians
Ignatius to the Philadelphians
Ignatius to Polycarp
Ignatius to the Romans
Ignatius to the Smyrnaeans
Ignatius to the Trallians

Origen against Celsus
Origen de principis
Origen and Africanus

S.Basilius

Basil: letters, hexaemeron

S.Gregorius Nazian.

Gregory Naz.

S.Cyrillus

Cyril of Jerus.

St. Ephrem

Ephraim, Apapphrat

St. Hilary

Hilary - Damascus

St. Ambrose

Ambrose selected works
Ambrose selected Letters
Ambrose Virgins

St. Augustine

Tracts
Augustin Catechising
Augustin: City of God
Augustin: confessions
Augustin on Faith
Augustin: Letters
Augustin - Treatises
Augustin - Trinity

Small Tracts
Augustin on Virginity
Augustin on Widowhood
Augustin on the Creed
Augustin Soliloquies

Polemics
Augustin - anti-pelagian

Others

Irenaeus, against Heresies