@inproceedings{bridges2012:475, author = {Beck-Pieterhons, Fran\c{c}oise and Beck, Jacques}, title = {Diptych View on The Spiral}, pages = {475--478}, booktitle = {Proceedings of Bridges 2012: Mathematics, Music, Art, Architecture, Culture}, year = {2012}, editor = {Bosch, Robert and McKenna, Douglas and Sarhangi, Reza}, isbn = {978-1-938664-00-7}, issn = {1099-6702}, publisher = {Tessellations Publishing}, address = {Phoenix, Arizona}, url = {http://archive.bridgesmathart.org/2012/bridges2012-475.html} }