@article{sparselinearensemblesystemsandstructural,
  title = {Sparse Linear Ensemble Systems and Structural Controllability},
  author = {Xudong Chen},
  year = {2020},
  eprint = {2004.02783},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2004.02783v2},
}