@misc{indiciae21bd2bf5508b,
  title = {A method of feasible directions using function approximations, with applications to min max problems.},
  author = {Klessig, R. and Polak, E.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730040672},
  note = {Source identifier: 19730040672}
}