Hanna Roose, “‘A Letter as By Us’: Intentional Ambiguity in 2 Thessalonians 2.2,” Journal for the Study of the New Testament 29 (2006) 107–24.
Andy Johnson, “Paul’s ‘anti-Christology’ in 2 Thessalonians 2:3–12in canonical context,” Journal of Theological Interpretation 8 (2014) 125–43.
Man of Sin, at wikipedia
The Apostasy & the Man of Lawlessness, by Brent Kercheville