@inproceedings{bridges2014:481, author = {Gelatti, Gabriele}, title = {On Colouring Sequences of Digital Roots}, pages = {481--482}, booktitle = {Proceedings of Bridges 2014: Mathematics, Music, Art, Architecture, Culture}, year = {2014}, editor = {Greenfield, Gary and Hart, George and Sarhangi, Reza}, isbn = {978-1-938664-11-3}, issn = {1099-6702}, publisher = {Tessellations Publishing}, address = {Phoenix, Arizona}, url = {http://archive.bridgesmathart.org/2014/bridges2014-481.html} }