@article{MacKinnon03-0,
  title = {Problem 11051},
  author = {Nick MacKinnon},
  year = {2003},
  url = {http://www.jstor.org/stable/3647974},
  researchr = {https://researchr.org/publication/MacKinnon03-0},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {110},
  number = {10},
  pages = {957},
}