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Catalunya, David. 2015. Polyphonic Music in Medieval Castile, 1250-1350: Sources and Contexts in the Period from Alfonso X to Alfonso XI. Universität Würzburg, PhD.

Catalunya, David. 2014. Medieval Polyphony in the Cathedral of Sigüenza: A New Identification of a Musical Example quoted in the Anonymous Treatise of St Emmeram (1279). Studi musicali, 41-82.