@misc{indiciae8209c4c48a50,
  title = {Dual field alignment display and control for electron micropattern generator},
  author = {Malmberg, P. R. and Okeeffe, T. W.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720000645},
  note = {Source identifier: 19720000645}
}