Michel Bataille. Problem 11044. The American Mathematical Monthly, 110(9):844, 2003. [doi]
@article{Bataille03, title = {Problem 11044}, author = {Michel Bataille}, year = {2003}, url = {http://www.jstor.org/stable/3647809}, researchr = {https://researchr.org/publication/Bataille03}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {110}, number = {9}, pages = {844}, }