@article{Mahler1968,
  author    = {{Kurt Mahler}},
  title     = {{An unsolved problem on the powers of $3/2$}},
  journal   = {{J. Australian Math. Soc.}},
  year      = {{1968}},
  volume    = {{8}},
  pages     = {{313--321}},
  note      = {{MR 37 #2694}},
}