@misc{indiciae86566d63d0ba,
  title = {Function space quasi-Newton algorithms for optimal control problems with bounded controls and singular arcs},
  author = {Edge, E. R. and Powers, W. F.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740034859},
  note = {Source identifier: 19740034859}
}