@misc{188706,
  author = {Sanford Ressler},
  title = {Tile Tool: A Graphical Interface for the Exploration of Generalized Penrose Tilings},
  year = {1989},
  month = {1989-01-01},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}