@misc{indiciae44f3d08b785f,
  title = {Derivative approximation for recursive signal detection},
  author = {Boorstyn, R. R. and Pettit, E. L., Jr.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700066201},
  note = {Source identifier: 19700066201}
}