@misc{indiciaef1377f3a9fce,
  title = {Subroutine allows easy computation in extended precision arithmetic},
  author = {Berggren, R. L. and Gysbers, J. C.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660000502},
  note = {Source identifier: 19660000502}
}