@article{Marcu1991,
  author    = {{Dȧnuţ Marcu}},
  title     = {{The powers of two and three}},
  journal   = {{Discrete Math.}},
  year      = {{1991}},
  volume    = {{89}},
  pages     = {{211-212}},
  note      = {{MR 92h:11026}},
}