@article{Coons17-1,
  title = {Extension of a Theorem of Duffin and Schaeffer},
  author = {Michael Coons},
  year = {2017},
  url = {https://cs.uwaterloo.ca/journals/JIS/VOL20/Coons/coons7.html},
  researchr = {https://researchr.org/publication/Coons17-1},
  cites = {0},
  citedby = {0},
  journal = {J. Integer Seq.},
  volume = {20},
  number = {9},
}