@article{Callan08-0,
  title = {Problem 11362},
  author = {David Callan},
  year = {2008},
  url = {http://www.jstor.org/stable/27642510},
  researchr = {https://researchr.org/publication/Callan08-0},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {115},
  number = {5},
  pages = {461},
}