Mark Bowron. Problem 11059. The American Mathematical Monthly, 111(1):64-65, 2004. [doi]
@article{Bowron04, title = {Problem 11059}, author = {Mark Bowron}, year = {2004}, url = {http://www.jstor.org/stable/4145026}, researchr = {https://researchr.org/publication/Bowron04}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {111}, number = {1}, pages = {64-65}, }