Media type: E-Article Title: Diminution in the Theory of Johannes de Muris and His Followers Contributor: DeFord, Ruth I. imprint: Oxford University Press (OUP), 2016 Published in: Music Theory Spectrum Language: English DOI: 10.1093/mts/mtw002 ISSN: 0195-6167; 1533-8339 Keywords: Music Origination: Footnote: