@inproceedings{bridges2006:491, author = {Mart\'{\i}n, Mar\'{\i}a Francisca Blanco and Nieto, Elena Elvira}, title = {New Ways in Symmetry}, pages = {491--496}, booktitle = {Bridges London: Mathematics, Music, Art, Architecture, Culture}, year = {2006}, editor = {Sarhangi, Reza and Sharp, John}, isbn = {0-9665201-7-3}, issn = {1099-6702}, publisher = {Tarquin Publications}, address = {London}, url = {http://archive.bridgesmathart.org/2006/bridges2006-491.html} }