Effective Versions of Ramsey's Theorem: Avoiding the Cone above 0'

@article{Hummel1994EffectiveVO,
  title={Effective Versions of Ramsey's Theorem: Avoiding the Cone above 0'},
  author={Tamara Lakins Hummel},
  journal={J. Symb. Log.},
  year={1994},
  volume={59},
  pages={1301-1325}
}