@misc{indiciae381a7c063172,
  title = {Adjoint-operators and non-adiabatic learning algorithms in neural networks},
  author = {Toomarian, N. and Barhen, J.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910043596},
  note = {Source identifier: 19910043596}
}