Barry, Gearóid: Pope Benedict XV and Pacifism: ‘An Invincible Phalanx for Peace?’, in: Melloni, Alberto / Cavagnini, Giovanni / Grossi, Giulia (eds.): Benedict XV: A Pope in the World of the 'Useless Slaughter' (1914-1918), Turnhout, Belgium 01/2020 Brepols Publishers, pp. 319-335.