@article{necessaryandsufficientconditionsforstate,
  title = {Necessary and Sufficient Conditions for State Feedback Equivalence to Negative Imaginary Systems},
  author = {Kanghong Shi and Ian R. Petersen and Igor G. Vladimirov},
  year = {2021},
  eprint = {2109.11273},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.11273v1},
}