Small Subgroups of Finite-Dimensional groups.

@article{Montgomery1952SmallSO,
  title={Small Subgroups of Finite-Dimensional groups.},
  author={D. Montgomery and L Zippin},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1952},
  volume={38 5},
  pages={440-2}
}