@misc{indiciae3a5ab09a393c,
  title = {A neighboring optimal feedback control scheme for systems using discontinuous control.},
  author = {Foerster, R. E. and Flugge-Lotz, I.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720029741},
  note = {Source identifier: 19720029741}
}