@misc{indiciaecd2d1252a9d1,
  title = {Recursive filter initialization.},
  author = {Battin, R. H. and Croopnick, S. R. and Habbe, J. M.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720050548},
  note = {Source identifier: 19720050548}
}