@inproceedings{bridges2012:102, author = {Fran\c{c}oise Beck-Pieterhons and Jacques Beck }, title = {Diptych View on The Spiral }, pages = {475--478}, booktitle = {Proceedings of Bridges 2012: Mathematics, Music, Art, Architecture, Culture}, year = {2012}, editor = {Robert Bosch and Douglas McKenna and Reza Sarhangi}, isbn = {978-1-938664-00-7}, issn = {1099-6702}, publisher = {Tessellations Publishing}, address = {Phoenix, Arizona, USA} }