@article{BlecksmithMcCallumSelfridge1998,
  author    = {{Richard Blecksmith, Michael McCallum, and John L. Selfridge}},
  title     = {{3-Smooth Representations of Integers}},
  journal   = {{American Math. Monthly}},
  year      = {{1998}},
  volume    = {{105}},
  pages     = {{529--543}},
  note      = {{MR 2000a:11019}},
}