@article{Holing09,
  title = {Problem 11420},
  author = {Kent Holing},
  year = {2009},
  url = {http://www.jstor.org/stable/40391076},
  researchr = {https://researchr.org/publication/Holing09},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {116},
  number = {3},
  pages = {277},
}