Gostoli, Antonietta. 2017. “Τὸ καλόν As a Criterion for Evaluating Innovation (τὸ καινόν) in Greek Theory of Musical Education: “Ancient” Versus ‘New’ Music in Ps. Plut. De Musica”. Peitho. Examina Antiqua 8 (1):379-90. https://doi.org/10.14746/pea.2017.1.24.