@misc{indiciae2e685c247d8b,
  title = {Real-time digital integrator},
  author = {Rubin, A. L. and Taylor, H. and Wallis, D. E.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19790000447},
  note = {Source identifier: 19790000447}
}