@misc{indiciaec38f5dbccf84,
  title = {Controllers, observers, and applications thereof},
  author = {Gao, Zhiqiang and Miklosovic, Robert and Radke, Aaron and Zhou, Wankun and Zheng, Qing},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110023517},
  note = {Source identifier: 20110023517}
}