@misc{indiciaea515b9046040,
  title = {Improved methods of forming monolithic integrated circuits having complementary bipolar transistors},
  author = {Bohannon, R. O., Jr. and Cashion, W. F. and Stehlin, R. A.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710000035},
  note = {Source identifier: 19710000035}
}