@misc{indiciae4648ffa5474a,
  title = {High voltage and current, gate assisted, turn-off thyristor development},
  author = {Nowalk, T. P. and Brewster, J. B. and Kao, Y. C.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730016494},
  note = {Source identifier: 19730016494}
}