Attribution to Palestrina in [Llorens Cisteró 1967] but [US-U, Renaissance Archives] rejects this assertion and proposes attribution to Festa
Bibliography
Odoj 2014 Wojciech Odoj, 'Some Observations on the VatS 18 and BolC Q19 Settings of the Antiphon Da Pacem: Were They Composed by Costanzo Festa?', in Hudební věda 51 (2014), 115-32.
US-U, Renaissance Archives Champaign-Urbana - University of Illinois - School of Music - Renaissance Archives [US-U] VatG VIII.39