@article{Singer02-1,
  title = {Problem 10981},
  author = {Nicholas Singer},
  year = {2002},
  url = {http://www.jstor.org/stable/3072465},
  researchr = {https://researchr.org/publication/Singer02-1},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {109},
  number = {10},
  pages = {922},
}