Direct infiltration of radioactive isotopes as a means of delivering ionizing radiation to discrete tissues.

@article{Hahn1947DirectIO,
  title={Direct infiltration of radioactive isotopes as a means of delivering ionizing radiation to discrete tissues.},
  author={Ph. Hahn and J. P. B. Goodell},
  journal={The Journal of laboratory and clinical medicine},
  year={1947},
  volume={32 12},
  pages={1442-53}
}