@article{BroersenHerzigTroquardJANCL2009,
  author    = {J. Broersen, A. Herzig and N. Troquard},
  title     = {What groups do, can do, and know they can do: an analysis in normal modal logics},
  journal   = {Journal of Applied Non-Classical Logic},
  volume    = {19},
  year      = {2009},
  number    = {3},
  note      = {},
  pages     = {261--289}
}