@misc{indiciaeb3cdd893dd72,
  title = {Derivative approximation for recursive signal detection},
  author = {Boorstyn, R. R. and Pettit, E. L., Jr.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710040899},
  note = {Source identifier: 19710040899}
}