José Luis Palacios, Richard Stong. Going around Randomly in Circles: 10881. The American Mathematical Monthly, 110(3):247, 2003. [doi]
@article{PalaciosS03, title = {Going around Randomly in Circles: 10881}, author = {José Luis Palacios and Richard Stong}, year = {2003}, url = {http://www.jstor.org/stable/3647952}, researchr = {https://researchr.org/publication/PalaciosS03}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {110}, number = {3}, pages = {247}, }