Mac Donncha (Frederic): Dáta Vita Tripartita Sancti Patricii.
InÉigse 18/1 (1980), pp. 125–142; 19/2 (1983), pp. 354-372.
Provides linguistic and literary evidence to date the composition of VTP to the Middle Irish period, vs. C. Ní Mhaolchróin 1927 (Best² 1995). With a summary of Middle Irish features and a commentary on the structure of the text.