Photoreductions and photocyclizations of tryptophan.

@article{Yonemitsu1966PhotoreductionsAP,
  title={Photoreductions and photocyclizations of tryptophan.},
  author={Osamu Yonemitsu and Pierre C{\'e}rutti and Bernhard Witkop},
  journal={Journal of the American Chemical Society},
  year={1966},
  volume={88 17},
  pages={3941-5}
}