@article{80,
  author = {Jun Liu and Xinzhi Liu and Wei-Chau Xie},
  title = {Generalized invariance principles for switched delay systems},
  year = {2011},
  journal = {IMA Journal of Mathematical Control and Information},
  volume = {28},
  pages = {19\textendash39},
  doi = {10.1016/j.aml.2010.10.001},
}