M. L. Glasser. Problem 11268. The American Mathematical Monthly, 114(1):78, 2007. [doi]
@article{Glasser07-0, title = {Problem 11268}, author = {M. L. Glasser}, year = {2007}, url = {http://www.jstor.org/stable/27642126}, researchr = {https://researchr.org/publication/Glasser07-0}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {114}, number = {1}, pages = {78}, }