@misc{indiciae4ab29bb9e6c5,
  title = {An algorithm for the solution to an optimal singular control problem.},
  author = {Hamilton, W. E., Jr. and Koivuniemi, A. J.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680032924},
  note = {Source identifier: 19680032924}
}