@misc{indiciaedfffe56794ba,
  title = {An approximation theory for nonlinear partial differential equations with applications to identification and control},
  author = {Banks, H. T. and Kunisch, K.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19830034976},
  note = {Source identifier: 19830034976}
}