@article{Mabry03,
  title = {Problem 10990},
  author = {Rick Mabry},
  year = {2003},
  url = {http://www.jstor.org/stable/3072353},
  researchr = {https://researchr.org/publication/Mabry03},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {110},
  number = {1},
  pages = {59},
}