@inproceedings{bridges2019:1,
  author      = {van Deventer, Oskar},
  title       = {That Is Not Art, It Is a Puzzle!},
  pages       = {1--8},
  booktitle   = {Proceedings of Bridges 2019: Mathematics, Art, Music, Architecture, Education, Culture},
  year        = {2019},
  editor      = {Goldstine, Susan and McKenna, Douglas and Fenyvesi, Krist\'{o}f},
  isbn        = {978-1-938664-27-4},
  issn        = {1099-6702},
  publisher   = {Tessellations Publishing},
  address     = {Phoenix, Arizona},

  url         = {http://archive.bridgesmathart.org/2019/bridges2019-1.html}
}