@misc{indiciae3c3e461ae9cf,
  title = {Logic-controlled solid state switchgear for 270 volts dc},
  author = {Sundberg, G. R. and Waddington, D. and Buchanan, E. E., Jr.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740005782},
  note = {Source identifier: 19740005782}
}