Eugene A. Herman, Richard Stong. Commuting Transformations: 11267. The American Mathematical Monthly, 116(2):183, 2009. [doi]
@article{HermanS09-1, title = {Commuting Transformations: 11267}, author = {Eugene A. Herman and Richard Stong}, year = {2009}, url = {http://www.jstor.org/stable/27642705}, researchr = {https://researchr.org/publication/HermanS09-1}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {116}, number = {2}, pages = {183}, }