@misc{indiciae812efa1c62f4,
  title = {Optimality and strong stability of control systems.},
  author = {J P Lasalle and S Wan},
  year = {1968},
  doi = {10.1073/pnas.61.2.375},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591692/},
  note = {Source identifier: 16591692}
}