@misc{indiciaed84679e7ca80,
  title = {On approximation of functions, topological mappings and nonlinear feedback control systems},
  author = {Athans, M. and Debs, A. S. and Joseph, K. M.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690031859},
  note = {Source identifier: 19690031859}
}