@article{CTT100911899,
  author = {Riku Funada and Maria Santos and Ryuichi Maniwa and Junya Yamauchi and Masayuki FUJITA and MITSUJI SAMPEI and Magnus Egerstedt},
  title = {Distributed Coverage Hole Prevention for Visual Environmental Monitoring With Quadcopters Via Nonsmooth Control Barrier Functions},
  journal = {IEEE Transactions on Robotics},
  year = 2023,
}