@inproceedings{bridges2017:515,
  author      = {Smethurst, Reilly},
  title       = {Non-Octave Guitar and Keyboard Designs for Ervin M. Wilson},
  pages       = {515--518},
  booktitle   = {Proceedings of Bridges 2017: Mathematics, Art, Music, Architecture, Education, Culture},
  year        = {2017},
  editor      = {Swart, David and S\'{e}quin, Carlo H. and Fenyvesi, Krist\'{o}f},
  isbn        = {978-1-938664-22-9},
  issn        = {1099-6702},
  publisher   = {Tessellations Publishing},
  address     = {Phoenix, Arizona},

  url         = {http://archive.bridgesmathart.org/2017/bridges2017-515.html}
}