@article{827763,
      author = {Mazzola, G.},
      url = {http://library.usi.edu/record/827763},
      title = {The topos of music. appendices /, IV,: Roots :},
      abstract = {"This is the fourth volume of the second edition of the  now classic book “The Topos of Music”. The author  presents appendices with background material on sound and  auditory physiology; mathematical basics such as sets,  relations, transformations, algebraic geometry, and  categories; complements in physics, including a discussion  on string theory; and tables with chord classes and  modulation steps."--},
      recid = {827763},
      pages = {1 online resource.},
}