@article{Sands11,
  title = {Cards, permutations, and sums},
  author = {Bill Sands},
  year = {2011},
  url = {http://cdm.ucalgary.ca/cdm/index.php/cdm/article/view/234},
  researchr = {https://researchr.org/publication/Sands11},
  cites = {0},
  citedby = {0},
  journal = {Contributions to Discrete Mathematics},
  volume = {6},
  number = {2},
}