||Snow 1977, no. 72 (publication details 2007): "An attempt to assess the musical notation of the CSM, a task not taken up by the Academy ed. of 1889. Comparing the unique notation of the music in the Toledo MS with that of the two at the Escurial, A. perceives a development in the use of rhythmic modes in the thirteenth century. He finds the musical construction markedly Iberian, representing a higher degree of sophistication than in the common Gallic form then in wide use elsewhere. He adapts the music of CSM 10, 32, 34, 77, 100, 119, 124, 231 and 425, either wholly or in part, but also prints the MS versions so that comparison can be made. Not the last word, but a good first one."