@inproceedings{bridges2009:321,
  author      = {Verbiese, Samuel},
  title       = {Amazing Labyrinths, further Amazing Labyrinths, further developments},
  pages       = {321--322},
  booktitle   = {Proceedings of Bridges 2009: Mathematics, Music, Art, Architecture, Culture},
  year        = {2009},
  editor      = {Kaplan, Craig S. and Sarhangi, Reza},
  isbn        = {978-0-96652-020-0},
  issn        = {1099-6702},
  publisher   = {Tarquin Publications},
  address     = {London},

  url         = {http://archive.bridgesmathart.org/2009/bridges2009-321.html}
}