@article{Abel07-1,
  title = {Problem 11300},
  author = {Ulrich Abel},
  year = {2007},
  url = {http://www.jstor.org/stable/27642256},
  researchr = {https://researchr.org/publication/Abel07-1},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {114},
  number = {6},
  pages = {547},
}