Ithamar Gruenwald has written:

'Messiah & Christos'

'From apocalypticism to Gnosticism' -- subject(s): Apocalyptic literature, Gnosticism, History and criticism, Judaism, Merkava in rabbinical literature, Mysticism

Daniel L. Hoffman has written:

'The status of women and Gnosticism in Irenaeus and Tertullian' -- subject(s): Women in Christianity, Gnosticism, Social conditions, History, Women

Gnosticism can be read about in many books. The Gnostic Society has their own Library in which everything about the Gnosticism can be learned or studied.

James McConkey Robinson has written:

'Theology as history' -- subject(s): Christianity, Doctrinal Theology, History, History of doctrines, Religious aspects of History

'The beginnings of dialectic theology' -- subject(s): Dialectical theology

'The Nag Hammadi codices' -- subject(s): Chenoboskion manuscripts, Gnosticism, Nag Hammadi codices, Nag Hammadi texts

'The problem of history in Mark and other Marcan studies' -- subject(s): Bible, Criticism, interpretation, Gnosticism

'The Nag Hammadi Library in English' -- subject(s): Gnostic literature, Gnosticism

'The secrets of Judas' -- subject(s): Gnostic interpretations, Gnosticism, Gospel of Judas

'An new quest of the Historical Jesus' -- subject(s): Demythologization, History

'The Sayings Gospel Q' -- subject(s): Bible, Criticism, interpretation, Q hypothesis (Synoptics criticism)

there is no scientific basis for Gnosticism or orthodox (mainstream) Christianity.