@inproceedings{bridges2006:429,
  author      = {Richter, David A. and Vorthmann, Scott},
  title       = {Green Quaternions, Tenacious Symmetry, and Octahedreal Zome},
  pages       = {429--436},
  booktitle   = {Bridges London: Mathematics, Music, Art, Architecture, Culture},
  year        = {2006},
  editor      = {Sarhangi, Reza and Sharp, John},
  isbn        = {0-9665201-7-3},
  issn        = {1099-6702},
  publisher   = {Tarquin Publications},
  address     = {London},

  url         = {http://archive.bridgesmathart.org/2006/bridges2006-429.html}
}